ACS37002LMABTR-U5 [ALLEGRO]
400 kHz, High Accuracy Current Sensor;
| 型号： | ACS37002LMABTR-U5 |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | 400 kHz, High Accuracy Current Sensor |
| 文件： | 总40页 (文件大小：2625K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACS37002
400 kHz, High Accuracy Current Sensor
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FEATURES AND BENEFITS
DESCRIPTION
• High operating bandwidth for fast control loops or where
high-speed currents are monitored
□ 400 kHz bandwidth
TheACS37002isafullyintegratedHall-effectcurrentsensorin
an SOICW-16 package that is factory-trimmed to provide high
accuracy over the entire operating range without the need for
customerprogramming.Thecurrentissenseddifferentiallyby
two Hall plates that subtract out interfering external common-
mode magnetic fields.
□ 2 µs typical response time
• High accuracy
□ 1% maximum sensitivity error over temperature (K series)
□ 6 mV maximum offset voltage over temperature
□ Non-ratiometric operation with VREF output
□ Low noise LA package
◊ 160 mVRMS for 3.3 V supply
◊ 124 mVRMS for 5 V supply
□ Differential sensing for high immunity to external
magnetic fields
□ No magnetic hysteresis
The package construction provides high isolation by
magnetically coupling the field generated by the current in
the conductor to the monolithic Hall sensor IC which has no
physical connection to the integrated current conductor. The
MA package is optimized for higher isolation with withstand
voltage, 4.8 kVRMS, and 0.85 mΩ conductor resistance. The
LA package is optimized for lower noise with 3.6 kVRMS
withstand voltage and 1 mΩ conductor resistance.
• Adjustable fast overcurrent fault
□ 1 µs typical response time
The ACS37002 has functional features that are externally
configurable and robust without the need for programming.
Two logic gain selection pins can be used to configure the
device to one of four defined sensitivities and corresponding
current ranges. A fast overcurrent fault output provides short-
circuit detection for system protection with a fault threshold
that is proportional to the current range and can be set with an
analog input. The reference pin provides a stable voltage that
corresponds to the 0A output voltage. This reference voltage
allowsfordifferentialmeasurementsaswellasadevice-referred
voltage to set the overcurrent fault threshold.
□ Pin adjustable threshold
• Externally configurable gain settings using two logic pins
□ Four adjustable gain levels for increased design
flexibility
Continued on the next page…
PACKAGE: 16-Pin SOICW (suffix MA/LA)
Not to scale
ACS37002
VCC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
MCU
GAIN_SEL_0
GND
IP+
IP+
IP+
IP+
RPU
GAIN_SEL_1
VREF
VCC
ADC
ADC
IP
VIOUT
IP-
IP-
IP-
IP-
CL
CREF
VOC
VCC
GND
VCC
Digital I/O
OCF
CBYPASS
RVOC(H)
CVOC
RVOC(L)
Figure 1: Typical Bidirectional Application
For more application circuits, refer to the Application and Theory section
ACS37002-DS, Rev. 3
MCO-0000900
December 16, 2020
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS 37002 K MAB TR
-
050
B
5 - ABC
FEATURES AND BENEFITS (continued)
□ Enabling measurement ranges from 10 to 133 A in both
Additional Idenifiers
unidirectional and bidirectional modes
• Low internal primary conductor resistance 0.85 mΩ (MA) and
1 mΩ (LA) for better power efficiency
Supply Voltage:
5 – VCC = 5 V
3 – VCC = 3.3 V
• UL60950-1 (ed. 2) and UL 62368 (ed. 1) certification, highly
isolated compact SOICW-16 surface mount package (MA)
□ 4.8 kVRMS rated isolation voltage
Output Directionality:
B – Bidirectional
U – Unidirectional
□ 1097 VRMS / 1550 VDC basic isolation voltages
□ 565 VRMS / 880 VDC reinforced isolation voltages
• Wide operating temperature, –40°C to 150°C
• AEC-Q100 Grade 0, automotive qualified
Current Sensing Range (A)
Packing Designator
Package Designator
Optimized Temperature Range
L – -40°C to 150°C
K – -40°C to 125°C
MA Only
5 Digit Part Number
Allegro Current Sensor
CB Certificate number:
US-32210-M3-UL
US-36315-UL
SELECTION GUIDE
Optimized
Temp. Range
Part Number
(click number to go to
Performance Characteristics)
Sensitivity [1]
(mV/A)
Nominal VCC
(V)
Current Sensing
Range, IPR (A)
Packing [2]
TA (°C)
MA Package, 16-Pin SOICW
60, 50, 40, 30
ACS37002LMABTR-050B5
ACS37002LMABTR-066B5
ACS37002LMABTR-050U5
ACS37002LMABTR-066U5
ACS37002LMABTR-050B3
ACS37002LMABTR-066B3
ACS37002LMABTR-050U3
ACS37002LMABTR-066U3
ACS37002KMABTR-050B5
ACS37002KMABTR-050B3
±33, ±40, ±50, ±66
±66, ±80 ±100, ±133
33, 40, 50, 66
30, 25, 20, 15
5
120, 100, 80, 60
66, 80, 100, 133
±33, ±40, ±50, ±66
±66, ±80, ±100, ±133
33, 40, 50, 66
60, 50, 40, 30
–40 to 150
39.6, 33, 26.4, 19.8
19.8, 16.5, 13.2, 9.9
79.2, 66, 52.8, 39.6
39.6, 33, 26.4, 19.8
60, 50, 40, 30
1000 pieces
per 13-inch reel
3.3
66, 80, 100, 133
±33, ±40, ±50, ±66
±33, ±40, ±50, ±66
5
–40 to 125 [3]
39.6, 33, 26.4, 19.8
LA Package [4], 16-Pin SOICW
200,166.6,133.3,100
80, 66.6, 53.3, 40
132, 110, 88, 66
3.3
ACS37002LLAATR-015B5
ACS37002LLAATR-025B5
ACS37002LLAATR-015B3
ACS37002LLAATR-025U3
±10, ±12, ±15, ±20
±25, ±30, ±37.5, ±50
±10, ±12, ±15, ±20
25, 30, 37.5, 50
5
1000 pieces
per 13-inch reel
–40 to 150
3.3
105.6, 88, 70.4, 52.8
[1] Refer to the part specific performance characteristics sections for Gain_Sel configuration.
[2] Contact Allegro for additional options.
[3] The device performance is optimized from –40°C to 125°C; however, the device can still operate to an ambient temperature of 150°C. The device shares the same
qualifications as the L temperature devices unless otherwise stated.
[4] Advanced information. LA package variation is not yet released.
2
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Table of Contents
Features and Benefits........................................................... 1
Description.......................................................................... 1
Packages............................................................................ 1
Selection Guide ................................................................... 2
Absolute Maximum Ratings................................................... 4
Isolation Characteristics........................................................ 4
MA Package Specific Performance......................................... 4
LA Package Specific Performance.......................................... 4
Pinout Diagram and Terminal List........................................... 5
Functional Block Diagram ..................................................... 6
Common Electrical Characteristics......................................... 7
Performance Characteristics................................................ 10
Functional Description ........................................................ 24
Power-On Reset Operation .............................................. 24
Power-On................................................................... 24
Power-Off................................................................... 24
Power-On Timing ........................................................ 24
Power-On Reset (POR)................................................ 24
Power-On Delay (tPOD)................................................. 24
Overvoltage and Undervoltage Detection........................... 25
Undervoltage Detection Voltage Thresholds (VUVD(H/L)).... 25
Overvoltage Detection Voltage Thresholds (VOVD(H/L))...... 25
Overvoltage/Undervoltage
Sensitivity Error (Esens) .................................................... 29
Gain Selection Pins......................................................... 29
Full Scale (FS)................................................................ 29
Nonlinearity (ELIN)........................................................... 29
Total Output Error (ETOT).................................................. 30
Power Supply Offset Error (VPS) ....................................... 30
Offset Power Supply Rejection Ratio (PSRRO) ................... 30
Power Supply Sensitivity Error (EPS) ................................ 30
Sensitivity Power Supply Rejection Ratio (PSRRS).............. 30
Fault Behavior ................................................................... 31
Overcurrent Fault (OCF) .................................................. 31
Overcurrent Fault
Operating Range/Point (IOCF-OR, IOCF-OP) ..................... 31
Overcurrent Fault Hysteresis (IOCF-Hyst).......................... 31
Voltage Overcurrent Pin (VOC) ..................................... 31
Overcurrent Fault Error (EOCF)...................................... 32
Overcurrent Fault Response Time (tOCF) ........................ 32
Overcurrent Fault Reaction Time (tOCF-R) ....................... 32
Overcurrent Fault Mask Time (tOCF-MASK) ....................... 32
Overcurrent Fault Hold Time (tOCF-HOLD)......................... 32
Overcurrent Fault Persist.............................................. 32
OCF Disable............................................................... 32
Dynamic Response Parameters........................................... 33
Propagation Time (tpd) ..................................................... 33
Rise Time (tR)................................................................. 33
Response Time (tRESPONSE) ............................................. 33
Temperature Compensation ............................................. 33
Temperature Compensation Update Rate .......................... 33
Application and Theory ....................................................... 34
Application Circuits.......................................................... 34
Theory and Functionality – VOC and OCF ......................... 35
VOC Driven by Non-Inverting Buffered VREF ................. 35
Power Supply Decoupling Capacitor and
Detection Hysteresis (VOVDHys, VUVDHys) ...................... 26
Overvoltage and Undervoltage
Enable and Disable Time (tOVD(E/D), tUVD(E/D))................ 26
Supply Zener Clamp Voltages....................................... 26
Absolute Maximum Ratings.............................................. 27
Forward and Reverse Supply Voltage ............................ 27
Forward and Reverse Output Voltage ............................ 27
Forward and Reverse Reference/Fault Voltage ............... 27
Output Source and Sink Current.................................... 27
Definitions of Operating and Performance Characteristics....... 28
Zero Current Voltage Output (VIOUT(Q), QVO) ..................... 28
QVO Temperature Drift (VQE) ........................................... 28
Reference Voltage (VREF) ................................................ 28
Reference Voltage Temperature Drift (VRE) ....................... 28
Offset Voltage (VOE)....................................................... 28
Output Saturation Voltage (VSAT(HIGH/LOW))......................... 28
Output Voltage Operating Range (VOOR)............................ 28
Sensitivity (Sens)............................................................ 29
Output Capacitive Loads ............................................ 35
Dynamically Change Gain in a System .............................. 36
Thermal Performance......................................................... 37
Thermal Rise vs. Primary Current ..................................... 37
Evaluation Board Layout ................................................. 37
Package Outline Drawings .................................................. 38
MA Package................................................................... 38
LA Package.................................................................... 39
3
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ABSOLUTE MAXIMUM RATINGS
Characteristic
Forward Supply Voltage
Reverse Supply Voltage
Forward Output Voltage
Reverse Output Voltage
Forward Input Voltage
Symbol
Notes
Rating
6.5
Unit
V
VCC
VRCC
VFIOUT
VRIOUT
VOI
–0.5
V
Applies to VIOUT, VOCF, and VREF
(VCC + 0.7) ≤ 6.5
–0.5
V
Applies to VIOUT, VOCF, and VREF
V
Applies to GAIN_SEL0, GAIN_SEL1, and VOC
Applies to GAIN_SEL0, GAIN_SEL1, and VOC
(VCC + 0.7) ≤ 6.5
–0.5
V
Reverse Input Voltage
VRI
V
Operating Ambient Temperature
Storage Temperature
TA
–40 to 150
–65 to 165
165
°C
°C
°C
Tstg
Maximum Junction Temperature
TJ(max)
ISOLATION CHARACTERISTICS
Characteristic
Symbol
Notes
Rating
Unit
Tested ±5 pulses at 2/minute in compliance to IEC 61000-4-5
1.2 µs (rise) / 50 µs (width)
Dielectric Surge Voltage
VSURGE
10
kV
Tested in compliance to IEC 61000-4-5
8 µs (rise) / 20 µs (width)
Surge Current [1]
ISURGE
CTI
13
kA
V
Comparative Track Index
[1] Certification pending.
Material Group II
400 to 599
MA PACKAGE SPECIFIC PERFORMANCE
Characteristic
Symbol
Notes
Rating
Unit
Distance Through Insulation
DTI
Minimum internal distance through insulation
90
µm
Agency type-tested for 60 seconds per UL 60950-1 (edition 2) and
Dielectric Strength Test Voltage
VISO
62368-1 (edition 1). Production tested at 3125 VRMS for 1 second in
accordance with UL 60950-1 (edition 2) and 62368-1 (edition 1)
5000
VRMS
1550
1097
800
565
7.5
VPK or VDC
VRMS
VPK or VDC
VRMS
Maximum approved working voltage for basic (single) isolation
according toUL 60950-1 (edition 2) and 62368-1 (edition 1)
Working Voltage for Basic Isolation
VWVBI
Working Voltage for Reinforced
Isolation
Maximum approved working voltage for reinforced isolation
according to UL 60950-1 (edition 2) and 62368-1 (edition 1)
VWVRI
Clearance
Creepage
Dcl
Dcr
Minimum distance through air from IP leads to signal leads
mm
Minimum distance along package body from IP leads to signal leads
7.9
mm
LA PACKAGE SPECIFIC PERFORMANCE
Characteristic
Symbol
Notes
Rating
Unit
Distance Through Insulation
DTI
Minimum internal distance through insulation
45
µm
Agency type-tested for 60 seconds per UL 60950-1 (edition 2).
Production tested at 3000 VRMS for 1 second in accordance with
UL 60950-1
Dielectric Strength Test Voltage
VISO
3600
VRMS
870
616
7.5
7.5
VPK or VDC
VRMS
mm
Maximum approved working voltage for basic (single) isolation
according to UL 60950-1 (edition 2)
Working Voltage for Basic Isolation [1]
VWVBI
Clearance [1]
Creepage [1]
Dcl
Dcr
Minimum distance through air from IP leads to signal leads
Minimum distance along package body from IP leads to signal leads
mm
[1] Certification pending.
4
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
PINOUT DIAGRAM AND TERMINAL LIST TABLE
16 GAIN_SEL_0
15 GND
IP+
IP+
IP+
IP+
IP-
1
2
3
4
5
6
7
8
14 GAIN_SEL_1
13 VREF
12 VIOUT
11 VOC
IP-
IP-
10 VCC
IP-
9
OCF
Figure 2: MA/LA Pinout Diagram
Terminal List Table
Number
Name
Description
1, 2, 3, 4
IP+
Terminals for current being sensed; fused internally
Terminals for current being sensed; fused internally
Overcurrent fault, open-drain
5, 6, 7, 8
IP-
9
OCF
10
11
12
13
14
15
16
VCC
Device power supply terminal
VOC
Overcurrent fault operation point input
Analog output representing the current flowing through IP
Zero current voltage reference
VIOUT
VREF
GAIN_SEL_1
GND
Gain selection bit 1
Device ground terminal
GAIN_SEL_0
Gain selection bit 0
5
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002
Digital
ꢘigital
Regꢓlator
ꢑꢌꢌ ꢃ10ꢆ
Signal Path ꢌontrol
and
ꢒꢒPRꢋMꢙ
ꢘigital ꢏlocꢐ
ꢍemꢀ. ꢌontrol
ꢕAꢁNꢖSꢒꢗꢖ1 ꢃ1ꢅꢆ
ꢋꢌꢊ ꢃ9ꢆ
RꢁꢕS
ꢋꢌꢊ
ꢊilteringꢎ
ꢕAꢁNꢖSꢒꢗꢖ0 ꢃ1ꢇꢆ
ꢑꢋꢌ ꢃ11ꢆ
RꢁꢕS
ꢋꢌꢊ
ꢍhresholdꢎ
ꢋꢌꢊ
ꢌomꢀ.
ꢑRꢒꢊ
ꢏꢓꢔꢔer
ꢑRꢒꢊ ꢃ13ꢆ
ꢁPꢂ ꢃ1,ꢄ,3,ꢅꢆ
ꢁP- ꢃ5,ꢇ,ꢈ,ꢉꢆ
ꢏacꢐ
Amꢀ.
ꢊront
Amꢀ.
ꢑꢁꢋUꢍ ꢃ1ꢄꢆ
Hall
ꢀlates
ꢕNꢘ ꢃ15ꢆ
ꢎꢊꢓrther inꢔormation in ꢍheory and
Aꢀꢀlication Section
Analog Signal Path
ꢘigital ꢌontrol
Figure 3: Functional Block Diagram
6
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON ELECTRICAL CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C,
CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
4.5
3.15
–
Typ.
5
Max.
5.5
3.6
18
15
–
Units
V
5 V devices only
Supply Voltage
VCC
3.3 V devices only
3.3
13
12
–
V
No load on VIOUT or VREF; VCC = 5 V
No load on VIOUT or VREF; VCC = 3.3 V
VCC to GND recommended
mA
mA
µF
kΩ
nF
kΩ
nF
kΩ
nF
mΩ
mΩ
nH
V
Supply Current
ICC
–
Supply Bypass Capacitor
Output Resistive Load
Output Capacitive Load
Reference Resistive Load
Reference Capacitive Load
Fault Pull-Up Resistance
VOC Capacitive Load
CBYPASS
RL
0.1
10
–
VIOUT to GND, VIOUT to VCC
VIOUT to GND
–
–
CL
1
6
RVREF
CVREF
RPU
VREF to GND (recommended to supply VOC); VREF to VCC
VREF to GND
10
–
62.7
–
–
6
4.7
–
–
500
1
CVOC
VOC to GND
MA,TA = 25°C
LA,TA = 25°C
–
–
0.85
1
–
Primary Conductor Resistance
Primary Conductor Inductance
Power-On Reset Voltage
RIP
–
–
LIP
–
4.2
2.9
2.5
–
–
VPOR(H)
VPOR(L)
VPOR(HYS)
VCC rising [1]
VCC falling [1]
2.6
2.2
250
3.1
2.8
–
V
POR Hysteresis
Power-On Time
mV
Time from VCC rising ≥ VUVD(DIS) after a POR event until
power-on; VREF, OCF, VIOUT
tPOD
100
–
–
μs
VUVD(L)
VUVD(H)
VUVD(HYS)
tdUVD(E)
tdUVD(D)
VOVD(H)
VOVD(L)
TA = 25°C, VCC falling [1]
TA = 25°C, VCC rising [1]
3.8
4
–
–
4.3
4.5
–
V
V
Undervoltage Detection
(UVD) Threshold [2]
UVD Hysteresis [2]
UVD Delay Time [2]
–
250
64
7
mV
µs
µs
V
Time from VCC falling ≤ VUVD(EN) until UVD asserts
Time from VCC rising ≥ VUVD(DIS) until UVD clears
TA = 25°C, VCC rising [1]
35
–
120
–
6.1
5.6
6.3
5.8
6.8
6.1
Overvoltage Detection (OVD)
Threshold
TA = 25°C, VCC falling [1]
V
Overvoltage Detection
Hysteresis
VOVD(HYS)
–
660
–
mV
tdOVD(E)
tdOVD(D)
Time from VCC rising ≥ VOVD(EN) until OVD asserts
Time from VCC falling ≤ VOVD(DIS) until OVD clears
35
–
90
7
120
–
µs
µs
OVD Delay Time
Continued on the next page…
7
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON PERFORMANCE CHARACTERISTICS (VIOUT): Valid through full operating temperature range,
TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
OUTPUT SIGNAL CHARACTERISTICS (VIOUT
)
VSAT(H)
VSAT(L)
RL = 10 kΩ to GND
RL = 10 kΩ to VCC
VCC – 0.25
–
–
–
0.15
4.5
3.0
–
V
V
Saturation Voltage
–
0.5
0.3
–
5 V linear operating range
3.3 V linear operating range
VIOUT shorted to GND
–
V
Output Operating Range
Output Current Limit
VOOR
–
V
IOUT(src)
IOUT(snk)
IOUT
25
mA
VIOUT shorted to VCC
–
25
–
mA
Output Drive
4.8
–
–
–
mA
Internal Bandwidth
Rise Time
BW
Small signal –3 dB, CL = 5.7 nF
400
0.7
1.1
0.7
350
155
450
200
277
124
357
160
±0.75
–
kHz
tR
TA = 25°C, CL = 5.7 nF, 10%-90% of 1 V output swing
–
2.5
2.5
2
µs
Response Time
Propagation Delay
tRESPONSE TA = 25°C, CL = 5.7 nF, 90% input to 90% of 1 V output swing
–
μs
tpd
TA = 25°C, CL = 5.7 nF, 20% input to 20% of 1 V output swing
–
μs
MA Package
LA Package
MA Package
LA Package
MA Package
LA Package
MA Package
LA Package
–
–
µA/√Hz
µA/√Hz
µA/√Hz
µA/√Hz
mARMS
mARMS
mARMS
mARMS
%
Input-referenced noise density;
TA = 25°C, CL = 5.7 nF; VCC = 5 V
–
–
Noise Density
IND
–
–
Input-referenced noise density;
TA = 25°C, CL = 5.7 nF; VCC = 3.3 V
–
–
–
–
Input-referenced noise at 400 kHz;
TA = 25°C, CL = 5.7 nF; VCC = 5 V
–
–
Noise
IN
–
–
Input-referenced noise at 400 kHz;
TA = 25°C, CL = 5.7 nF; VCC = 3.3 V
–
–
Nonlinearity
ELIN
–
–
DC to 1 kHz, 100 mV pk-pk ripple around VCC = VCC(typ)
IP = 0 A, change in VOE
,
–
–
–40
–30
–15
–6
–
–
dB
dB
dB
dB
mV
Power Supply Rejection Ratio
Offset
PSRRO
1 to 100 kHz, 100 mV pk-pk ripple around VCC = VCC(typ)
IP = 0 A, change in VOE
,
DC to 1 kHz, 100 mV pk-pk ripple around VCC = VCC(typ)
IP = IPR(MAX), change in Sens
,
–
–
Power Supply Rejection Ratio
Sens
PSRRS
VOE(PS)
1 to 100 kHz, 100 mV pk-pk ripple around VCC = VCC(typ)
IP = IPR(MAX), change in Sens
,
–
–
Power Supply Offset Error
VCC @ VCC(MIN) or VCC(MAX)
–10
–
10
Power Supply Sensitivity Error ESENS(PS) VCC @ VCC(MIN) or VCC(MAX)
–1.5
–
–
4
1.5
–
%
Common-Mode Field Rejection
CMFR
Input-referred error due to common-mode field
mA/G
Continued on the next page…
8
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
COMMON PERFORMANCE CHARACTERISTICS (VREF, FAULT, GAIN_SEL): Valid through full operating
temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
REFERENCE OUTPUT CHARACTERISTICS (VREF)
Bidirectional; VCC = 5 V
Bidirectional; VCC = 3.3 V
2.49
1.64
0.49
0.32
–
2.5
1.65
0.5
0.33
25
2.51
1.66
0.51
0.34
–
V
V
VREF(BI)
Zero Current Reference Voltage
Unidirectional; VCC = 5 V
Unidirectional; VCC = 3.3 V
V
VREF(UNI)
V
IREF(SRC) Maximum current VREF can passively source
IREF(SNK) Maximum current VREF can passively sink
mA
mA
V/µs
Reference Source Current Limit
Reference Slew Rate
–
–25
–
–
SRREF
CVREF = 0 nF, RVREF = 0 Ω
0.8
–
OVERCURRENT FAULT CHARACTERISTICS (OCF)
OCF On Voltage [4]
VFAULT-ON RPU = 4.7 kΩ, under fault condition
–
–
0.07
100
–
0.4
–
V
nA
No Fault
OCF Sink Current [4]
IOCF(SNK)
Fault Assertion
VCC = 5 V
0.01
0.5
0.33
–10
–
1.1
2
mA
V
–
VOC Operating Voltage Range
Fault Error
VVOC
EOCF
IOCF(HYS)
tOCF-R
VCC = 3.3 V
–
1.32
10
–
V
±3
6
%IOCF-OP
%FS
%FS
μs
VCC = 5 V
OCF Hysteresis
VCC = 3.3 V
–
9
–
OCF Reaction Time [4]
OCF Mask [4]
Time from IOCF-OP, with a 1.2 × IOCF-OP until fault asserts
–
1
1.5
3
tOCF-MASK Time IOCF-OP must be present after tOCF-R for fault assertion [3]
tOCF tOCF-MASK = 0.5µs
tOCF-HOLD Minimum duration of FAULT assertion [3]
0
0
µs
OCF Response Time [4]
OCF Hold Time [4]
–
1
1.5
5
µs
0
0
ms
GAIN SELECTION PIN CHARACTERISTICS (GAIN_SEL0, GAIN_SEL1)
Gain Select Internal Resistor
RGSint
–
1
–
–
–
–
–
MΩ
V
VCC = 5 V
3.75
2.25
–
VH(SEL)
GAIN_SEL Logic Input Voltage
VCC = 3.3 V
–
V
VL(SEL)
0.5
V
Leakage Current [4]
ISEL(SNK)
–
–
±10
µA
[1]
V
rate +1 V/ms, for best accuracy.
CC
[2] Only enabled on 5V devices.
[3] Typical value is factory default.
[4] Guaranteed by design and bench validated
9
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050B5
Selection Identifier
ACS37002LMABTR-050B5 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Digital Input
Digital Input
Calculation
Bidirectional
0
0
1
0
1
0
40
50
60
50
40
Selection
Combination
33.3
1
1
30
66.7
ACS37002LMABTR-050B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–50
–40
–33.3
–66.7
–
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
40
50
60
30
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
200
–
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
10
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066B5
Selection Identifier
ACS37002LMABTR-066B5 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Bidirectional
66.7
Digital Input
Digital Input
Calculation
0
0
1
0
1
0
30
25
20
80
Selection
Combination
100
1
1
15
133.3
ACS37002LMABTR-066B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–66.7
–
–
66.7
80
100
133.3
–
A
A
–80
Current Sensing Range
IPR
–100
–
A
–133.3
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
–
–
30
25
20
15
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
%
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
VOE_LTD
VQE_LTD
–2 ±3
10
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–10
–14
–10
–2 ±5
±4
10
10
14
10
mV
mV
mV
mV
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
–4 ±6
±7
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
11
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050U5
Selection Identifier
ACS37002LMABTR-050U5 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Digital Input
Digital Input
Calculation
Bidirectional
0
0
1
0
1
0
80
50
40
100
120
Selection
Combination
33.3
1
1
60
66.7
ACS37002LMABTR-050U5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
0
0
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
0
–
A
0
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Unidirectional; IP = 0 A, TA = 25°C
–
80
100
120
60
50
0.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
25
–
100
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
12
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066U5
Selection Identifier
ACS37002LMABTR-066U5 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Bidirectional
66.7
Digital Input
Digital Input
Calculation
0
0
1
0
1
0
60
50
40
80
Selection
Combination
100
1
1
30
133.3
ACS37002LMABTR-066U5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
0
0
–
–
66.7
80
100
133.3
–
A
A
Current Sensing Range
IPR
0
–
A
0
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Unidirectional; IP = 0 A, TA = 25°C
–
60
50
40
30
50
0.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
25
–
100
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
13
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050B3
Selection Identifier
ACS37002LMABTR-050B3 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
26.4
Max IP (A)
Digital Input
Digital Input
Bidirectional
0
0
1
0
1
0
50
40
33
Selection
Combination
39.6
33.3
1
1
19.8
66.7
ACS37002LMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–50
–40
–33.3
–66.7
–
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
26.4
33
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
39.6
19.8
100
1.65
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
200
–
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
14
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066B3
Selection Identifier
ACS37002LMABTR-066B3 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
19.8
Max IP (A)
Bidirectional
66.7
Digital Input
Digital Input
0
0
1
0
1
0
16.5
80
Selection
Combination
13.2
100
1
1
9.9
133.3
ACS37002LMABTR-066B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–66.7
–
–
66.7
80
100
133.3
–
A
A
–80
Current Sensing Range
IPR
–100
–
A
–133.3
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
–
–
19.8
16.5
13.2
9.9
100
1.65
mV/A
mV/A
mV/A
mV/A
%FS
V
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
15
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-050U3
Selection Identifier
ACS37002LMABTR-050U3 Gain_Sel Pin Performance Key
Parameter (Units)
Type
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
52.8
Max IP (A)
Digital Input
Digital Input
Bidirectional
0
0
1
1
0
1
0
1
50
40
66
Selection
Combination
79.2
33.3
66.7
39.6
ACS37002LMABTR-050U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
0
0
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
0
–
A
0
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Unidirectional; IP = 0 A, TA = 25°C
–
52.8
66
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
79.2
39.6
50
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
25
–
100
–
0.33
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
16
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LMABTR-066U3
Selection Identifier
ACS37002LMABTR-066U3 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
39.6
Max IP (A)
Bidirectional
66.7
Type
Digital Input
Digital Input
0
0
1
1
0
1
0
1
33
80
Selection
Combination
26.4
100
19.8
133.3
ACS37002LMABTR-066U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
0
0
–
–
66.7
80
100
133.3
–
A
A
Current Sensing Range
IPR
0
–
A
0
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Unidirectional; IP = 0 A, TA = 25°C
–
39.6
33
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
26.4
19.8
50
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
25
–
100
–
0.33
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–10
–0.5 ±0.6
–0.5 ±0.6
–2 ±3
1.75
1.5
10
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
–1 ±3
–1 ±4
–1 ±3
–3 ±5
–1 ±4
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.6
–3.4
–10
–10
–10
–1.6 ±1.2
–1.5 ±1.1
–3 ±4
3.6
3.4
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
17
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002KMABTR-050B5
Selection Identifier
AACS37002KMABTR-050B5 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
1
1
0
1
0
1
40
50
60
30
50
40
Selection
Combination
33.3
66.7
ACS37002KMABTR-050B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 125°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–50
–40
–33.3
–66.7
–
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
40
50
60
30
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
200
–
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR+VREF)) / (Sens(IDEAL) × IPR)× 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1
–0.5 ±0.6
–0.3 ±0.5
–2 ±3
1.75
1
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–10
–8
–1 ±3
±5
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
–1 ±3
–3 ±4
±5
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.4
–3.2
–10
–10
–10
–1.4 ±1.2
–1.3 ±1.1
–3 ±4
3.4
3.2
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
18
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002KMABTR-050B3
Selection Identifier
ACS37002KMABTR-050B3 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
26.4
Max IP (A)
Type
Digital Input
Digital Input
Bidirectional
0
0
1
1
0
1
0
1
50
40
33
Selection
Combination
39.6
33.3
66.7
19.8
ACS37002KMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 125°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–50
–40
–33.3
–66.7
–
–
–
50
40
33.3
66.7
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
26.4
33
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
39.6
19.8
100
1.65
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
200
–
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1
–0.5 ±0.6
–0.3 ±0.5
–2 ±3
1.75
1
%
%
Sensitivity Error
ESENS
IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
–10
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
–10
–8
–1 ±3
±5
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
–1 ±3
–3 ±4
±5
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3]
Total Error Including Lifetime Drift
ETOT_LTD
IP = IPR(max)
–3.4
–3.2
–10
–10
–10
–1.4 ±1.2
–1.3 ±1.1
–3 ±4
3.4
3.2
10
10
10
%
Sensitivity Error Including Lifetime Drift
ESENS_LTD
IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C
%
mV
mV
mV
Zero Current Reference Error Including
Lifetime Drift
VRE_LTD
–2 ±3
–2 ±5
Offset Error Including Lifetime Drift
QVO Error Including Lifetime Drift
VOE_LTD
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 125°C
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
–10
–14
–10
±4
–4 ±6
±7
10
14
10
mV
mV
mV
VQE_LTD
[[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma.
[2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma.
[3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification.
Contact Allegro MicroSystems for further information.
19
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-015B5
Selection Identifier
ACS37002LLAATR-015B5 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
133.3
Max IP (A)
Type
Digital Input
Digital Input
Bidirectional
0
0
1
1
0
1
0
1
15
12
10
20
166.6
Selection
Combination
200
100
ACS37002LLAATR-015B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–15
–12
–10
–20
–
–
–
15
12
10
20
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
133.3
166.6
200
100
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–1.5
±1.4
±1.3
±1.2
1.75
1.5
%
%
%
IP = IPR(max), TA = 25°C to 150°C
IP = IPR(max), TA = –40°C to 25°C
Sensitivity Error
ESENS
1.5
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
±4
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
±5
±4
±5
±6
±7
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
[1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification.
20
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-025B5
Selection Identifier
ACS37002LLAATR-025B5 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
1
1
0
1
0
1
80
66.6
53.3
40
25
30
Selection
Combination
37.5
50
ACS37002LLAATR-025B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–25
–30
–37.5
–50
–
–
–
25
30
37.5
50
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
80
66.6
53.3
40
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–1.5
±1.4
±1.3
±1.2
1.75
1.5
%
%
%
IP = IPR(max), TA = 25°C to 150°C
IP = IPR(max), TA = –40°C to 25°C
Sensitivity Error
ESENS
1.5
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
±4
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
±5
±4
±5
±6
±7
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
[1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification.
21
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-015B3
Selection Identifier
ACS37002LLAATR-015B3 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Max IP (A)
Type
Digital Input
Digital Input
Calculation
Bidirectional
0
0
1
1
0
1
0
1
88
110
132
66
15
12
10
20
Selection
Combination
ACS37002LLAATR-015B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–15
–12
–10
–20
–
–
–
15
12
10
20
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
88
110
132
66
100
2.5
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–1.5
±1.4
±1.3
±1.2
1.75
1.5
%
%
%
IP = IPR(max), TA = 25°C to 150°C
IP = IPR(max), TA = –40°C to 25°C
Sensitivity Error
ESENS
1.5
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
±4
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
±5
±4
±5
±6
±7
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
[1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification.
22
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ACS37002LLAATR-025U3
Selection Identifier
ACS37002LLAATR-025U3 Gain_Sel Pin Performance Key
Parameter (Units)
Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean)
Sens (mV/A)
Calculation
105.6
Max IP (A)
Type
Digital Input
Digital Input
Bidirectional
0
0
1
1
0
1
0
1
25
30
88
Selection
Combination
70.4
37.5
50
52.8
ACS37002LLAATR-025U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = –ꢀ40°C to 150°C,
CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Units
NOMINAL PERFORMANCE
Gain Sel 00
Gain Sel 01
Gain Sel 10
Gain Sel 11
–25
–30
–30
–50
–
–
–
25
30
30
50
–
A
A
Current Sensing Range
IPR
–
A
–
A
Gain Sel 00; IPR(min) < IP < IPR(max)
Gain Sel 01; IPR(min) < IP < IPR(max)
Gain Sel 10; IPR(min) < IP < IPR(max)
Gain Sel 11; IPR(min) < IP < IPR(max)
Typ. = factory-programmed default, FS = Full-Scale
Bidirectional; IP = 0 A, TA = 25°C
105.6
88
mV/A
mV/A
mV/A
mV/A
%FS
V
–
–
Sensitivity
Sens
–
70.4
52.8
100
2.5
–
–
–
Overcurrent Fault Operating Range
Zero Current Output Voltage
IOCF-OR
VIOUT(Q)
50
–
200
–
TOTAL ERROR (VIOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100
AND TOTAL ERROR COMPONENTS
Total Error
ETOT
IP = IPR(max)
–1.75
–1.5
–1.5
±1.4
±1.3
±1.2
1.75
1.5
%
%
%
IP = IPR(max), TA = 25°C to 150°C
IP = IPR(max), TA = –40°C to 25°C
Sensitivity Error
ESENS
1.5
VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C
–10
±4
10
mV
Zero Current Reference Error
VRE
VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C
VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C
VIOUT(Q), IP = 0 A, TA = 25°C to 150°C
–10
–8
±5
±4
±5
±6
±7
10
8
mV
mV
mV
mV
mV
Offset Error
QVO Error
VOE
–8
8
–10
–10
10
10
VQE
VIOUT(Q), IP = 0 A, TA = –40°C to 25°C
[1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification.
23
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FUNCTIONAL DESCRIPTION
ꢃoltage
Power-On Reset Operation
V
CC
V
OUT
ꢀ
The descriptions in this section assume: temperature = 25°C, with
the labeled test conditions. The provided graphs in this section
show VIOUT moving with VCC. The voltage of VIOUT during a
high-impedance state will be most consistent with a known load
(RLOAD,CLOAD).
5 ꢃ
ꢃ
UꢃꢄꢅHꢆ
ꢃ
PꢂRꢅHꢆ
A
ꢇꢃꢂ
ꢀ.5 ꢃ
HI Z
t
Pꢂꢄ
POWER-ON
t
PꢂRR
t
PꢂR-ꢂUꢁ
As VCC ramps up, the ACS37002's VIOUT and VREF pins are
high impedance until VCC reaches and passes VUVD(H) [2] (or
VPOR(H) [1] if UVD is disabled). Once VCC passes [2], the device
takes some time without VCC dropping below VPOR(L) [8] before
the device enters normal operation.
ꢁime
Figure 5: tPOD behavior UVD disabled, RL = Pull-Up
POWER-ON RESET (POR)
If VCC falls below VPOR(L) [8] while in operation, the output will
re-enter a high-impedance state. After VCC recovers and exceeds
VUVD(H) [2], the output will begin reporting again after the delay
of tPOD.
POWER-OFF
As VCC drops below VPOR(L) [8], the outputs will enter a high-
impedance state. If UVD is enabled, before the device powers off,
it will force VIOUT to GND if VCC < VUVD(L) [6] until VPOR(L) [8]
(seen in Figure 4 and Figure 6) is reached, at which point VIOUT
and VREF will go high Z. If UVD is disabled, then VREF and VIOUT
will continue to report until VCC is less than VPOR(L) [8] (seen in
Figure 7), at which point they will go high Z.
POWER-ON DELAY (TPOD
)
When the supply is ramped to VUVD(H) (seen in Figure 5 as [2]),
the device will require a finite time to power its internal compo-
nents before the outputs are released from high Z and can respond
to an input magnetic field. Power-On Time, tPOD, is defined as
the time it takes for the output voltage to settle within ±10% of
its steady-state value under an applied magnetic field, which can
be seen the time from [2] to [A]. After this delay, the output will
Note: Since the device is entering a high Z state, and not driving
the output, the time it takes the output to reach a steady state will
depend on the external circuitry used.
quickly approach VIOUT(IP) = Sens × IP + VREF
.
ꢂoltage
V
CC
V
IOUT
1
1
ꢉ
3
ꢀ
5
ꢊ
ꢊ
ꢊ
ꢋ
ꢋ
ꢌ
ꢌ
ꢂ
ꢇꢂꢃꢄHꢅ
ꢂ
ꢇꢂꢃHys
ꢂ
ꢇꢂꢃꢄꢆꢅ
5
ꢂ
ꢂ
UꢂꢃꢄHꢅ
ꢂ
UꢂꢃHys
ꢂ
Uꢂꢃꢄꢆꢅ
ꢂ
PꢇRꢄHꢅ
ꢂ
PꢇRHys
ꢂ
PꢇRꢄꢆꢅ
HI Z
ꢈꢂꢇ
ꢉ.5
ꢂ
HI Z
HI Z
HI Z
ꢁime
Figure 4: Power States Thresholds with VIOUT Behavior for a 5 V Device, RL = Pull-Down, UVD Enabled
24
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
If UVD is disabled or it is a 3.3 V device, VIOUT and VREF will
begin report after VCC raises above VPOR(H) (seen in Figure 7 as
[1]) under the same conditions.
Overvoltage and Undervoltage Detection
(OVD/UVD)
To ensure that the device’s output is reporting accurately, the
device contains an overvoltage and an undervoltage detection
flag. This flag on VIOUT can be used to alert the system when the
supply voltage for the device is outside of the operational range.
UVD is only active on 5 V devices.
If VCC drops below VUVD(L) [6] after normal operation, VIOUT
will pull to GND regardless of RLOAD configuration. The VIOUT
will remain at GND until VCC raises above VUVD(H) [7] or VCC
falls below VPOR(L) [8]. If VCC rises above VUVD(H) [7] after a
UVD, event, the VIOUT and VREF outputs will resume operation.
If VCC drops below VPOR(L) [8], the device will enter a POR
event and reset; VIOUT and VREF will switch to high Z if this
occurs.
UNDERVOLTAGE DETECTION VOLTAGE
THRESHOLDS (VUVD(H/L)
)
The 5 V ACS37002 is factory-programmed with UVD enabled. It
is important to note that when powering up the device for the first
time after a POR event, VIOUT and VREF will remain high Z until
VCC is raised above VUVD(H) (seen in Figure 6 as [2]), at which
OVERVOLTAGE DETECTION VOLTAGE
THRESHOLDS (VOVD(H/L)
)
point the VIOUT and VREF outputs will begin to normal operation. When VCC raises above VOVD(H) (seen in Figure 6 as [4]), the
ꢂoltage
V
CC
V
IOUT
1
1
ꢉ
3
ꢀ
5
ꢊ
ꢊ
ꢊ
ꢋ
ꢋ
ꢌ
ꢌ
ꢂ
ꢂ
ꢇꢂꢃꢄHꢅ
ꢂ
ꢇꢂꢃHys
ꢇꢂꢃꢄꢆꢅ
5
ꢂ
ꢂ
UꢂꢃꢄHꢅ
ꢂ
UꢂꢃHys
PꢇRHys
ꢂ
Uꢂꢃꢄꢆꢅ
ꢂ
PꢇRꢄHꢅ
ꢂ
ꢂ
PꢇRꢄꢆꢅ
HI Z
ꢈꢂꢇ
ꢉ.5
ꢂ
HI Z
HI Z
HI Z
ꢁime
V
REF
ꢉ
ꢀ
5
ꢊ
ꢋ
ꢊ
ꢌ
ꢋ
ꢊ
ꢌ
ꢂoltage
ꢂ
Rꢍꢎꢄꢏdealꢅ
HI Z
HI Z
HI Z
ꢁime
Figure 6: Power States Thresholds with VIOUT and VREF Behavior, 5 V Device, RL = Pull-Up, UVD Enabled
ꢂoltage
V
CC
V
IOUT
1
1
ꢀ
5
ꢊ
ꢊ
ꢂ
ꢃꢂꢉꢄHꢅ
3
ꢂ
ꢃꢂꢉHys
ꢂ
ꢃꢂꢉꢄꢆꢅ
5
ꢂ
3.3ꢂ
ꢂ
PꢃRꢄHꢅ
ꢂ
PꢃRHys
ꢂ
PꢃRꢄꢆꢅ
HI Z
ꢇꢂꢃ
1.ꢈ5
ꢂ
HI Z
HI Z
HI Z
ꢁime
V
REF
ꢀ
5
ꢊ
1
ꢊ
1
ꢂoltage
ꢂ
Rꢋꢌꢄꢍdealꢅ
HI Z
HI Z
HI Z
ꢁime
Actꢎal Perꢏormance
Figure 7: Power States Thresholds with VIOUT and VREF Behavior, 3.3 V Device, RL = Pull-Up, UVD Disabled
25
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
output of the VREF and VIOUT pin will go high Z, VREF be pulled
to GND, and VIOUT will be pulled to either VCC or GND,
depending if RLoad is in a pull-up or pull-down configuration.
If VCC ramps from >VUVD(L) [6] to <VPOR(L) [8] (both seen in
Figure 8) faster than tUVD(E), then the device will not have time to
report a UVD event before power off occurs.
The disable time for OVD, tOVD(D), is the time from VOVD(L) [5]
to the OVD clear to normal operation [C] in Figure 8. The UVD
disable time, tUVD(D), is the time from VUVD(H) [7] to the point
that the UVD flag clears and VIOUT returns to nominal opera-
tion [E], also seen in Figure 8. The disable time does not have a
counter for either UVD or UVD to release the output and resume
reporting.
OVERVOLTAGE/UNDERVOLTAGE DETECTION
HYSTERESIS (VOVD(HYS), VUVD(HYS)
)
There is hysteresis between enable and disable thresholds to
reducing nuisance flagging and clears. There is approximately
1 V and 0.4 V of hysteresis for Overvoltage and Undervoltage
respectively. These can be seen represented in Figure 6 between
the relevant thresholds.
SUPPLY ZENER CLAMP VOLTAGES
If the voltage applied to the device continues to increase past
overvoltage detection, there is a point when the Zener diodes will
turn on. These internal diodes are in place to protect the device
from short high voltage or ESD events and should NOT be used
as a feature to reduce the voltage on a line. Continued exposure to
voltages higher than normal operating voltage, VCC, can weaken
or damage the Zener diodes, which will potentially damage the
OVERVOLTAGE AND UNDERVOLTAGE
ENABLE AND DISABLE TIME (TOVD(E/D), TUVD(E/D)
)
The enable time for OVD, tOVD(E), is the time from VOVD(H) [4]
to OVD flag [B] in Figure 8. The UVD enable time, tUVD(E), is
the time from VUVD(L) [6] to the UVD flag [D], also in Figure 8.
The enable flag for both OVD and UVD has a counter to reduce
transients faster than 64 µs from triggering nuisance flags.
part.
ꢂoltage
V
CC
V
IOUT
ꢉ
ꢀ
5
ꢎ
ꢍ
ꢂ
ꢇꢂꢃꢄHꢅ
ꢂ
ꢇꢂꢃHys
ꢂ
ꢇꢂꢃꢄꢆꢅ
5 ꢂ
ꢂ
UꢂꢃꢄHꢅ
ꢂ
UꢂꢃHys
ꢂ
Uꢂꢃꢄꢆꢅ
ꢂ
PꢇRꢄHꢅ
ꢂ
PꢇRHys
ꢂ
PꢇRꢄꢆꢅ
HI Z
ꢈꢂꢇ
ꢉ.5 ꢂ
A
ꢌ
ꢊ
t
t
ꢇꢂꢃꢄꢊꢅ
t
t
Uꢂꢃꢄꢃꢅ
t
Pꢇꢃ
Uꢂꢃꢄꢊꢅ
ꢇꢂꢃꢄꢃꢅ
HI Z
ꢋ
ꢃ
ꢁime
Figure 8: tPOD, tOVD(E/D), and tUVD(E/D) with RL = Pull-Up
26
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
programming or transient switching. The Reverse Output Voltage
Absolute Maximum Ratings
or VR-RF should not drop below –0.5 V during programming or
transient switching. These voltages should not be used as a DC
voltage bias for an extended time.
These are the maximum application or environmental conditions
that the device can be subjected before damage may occur.
FORWARD AND REVERSE SUPPLY VOLTAGE
OUTPUT SOURCE AND SINK CURRENT
These are the largest voltage magnitudes that can be supplied to
VCC from GND during programing or transient switching. This
voltage should not be used as a DC voltage bias for an extended
time.
This is the maximum current that VIOUT can passively sink or
source before damage may occur.
AMBIENT TEMPERATURE (TA)
FORWARD AND REVERSE OUTPUT VOLTAGE
This is the ambient temperature of the device. The Operating
Ambient Temperature Range is the ambient temperature range
that the Common Electricals and Common Performance Char-
acteristics limits are valid. The Optimized Ambient Temperature
Range is the ambient temperature range that the device-specific
performance characteristics limits are valid. ACS37002L devices
have optimized performance in the –40°C to 150°C (“L” temper-
ature) range. ACS37002K devices have optimized performance
in the –40°C to 125°C (“K” temperature) range. The –40°C to
125°C (“K” temperature) range devices have Device Specific
Performance optimized within the –40°C to 125°C temperature
range but will still operate in the –40°C to 150°C (“L” tempera-
ture) range.
The Forward Output Voltage or VFIOUT voltage can be no greater
than VCC + 0.5 up to 6.5 V. This is the greatest voltage that the
output can be biased with from GND during programming or
transient switching. The Reverse Output Voltage or VRIOUT
should not drop below –0.5 V during programming or transient
switching. These voltages should not be used as a DC voltage
bias for an extended time.
FORWARD AND REVERSE REFERENCE/FAULT VOLTAGE
The Forward Reference/Fault Voltage or VF-RF voltage can be no
greater than VCC + 0.5 up to 6.5 V. This is the greatest voltage
that the VREF and VOCF can be biased with from GND during
27
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
DEFINITIONS OF OPERATING AND PERFORMANCE CHARACTERISTICS
Zero Current Voltage Output (VIOUT(Q), QVO)
Output Saturation Voltage (VSAT(HIGH/LOW))
Zero Current Voltage Output or VIOUT(Q) (also called QVO) is
defined as the voltage on the output, VIOUT when zero amps are
applied through IP.
Output Saturation Voltage, or VSAT, is defined as the voltage that
the VIOUT does not pass as a result to an increasing magnitude
of current. VSAT(HIGH) is the highest voltage the output can drive
to while, VSAT(LOW) is the lowest. This can be seen in Figure
10. Note that changing the sensitivity does not change the VSAT
points.
QVO Temperature Drift (VQE
)
QVO Temperature Drift, or VQE, is defined as the drift of QVO
from room to hot or room to cold (25°C to 125/150°C or 25°C to
–40°C respectively). To improve over temperature performance
the temperature drift is compensated with Allegro’s factory trim to
remain within the limits across temperature.
OUTPUT VOLTAGE OPERATING RANGE (VOOR
)
The Output Voltage Operating Range, or VOOR, is the functional
range for linear performance of VIOUT and its related datasheet
parameters. This can be seen in Figure 10. The VOOR is the output
region that the performance accuracy parameters are valid. It is
Reference Voltage (VREF
)
possible for the output to report beyond these voltages until VSAT
but certain parameters cannot be guaranteed. The output perfor-
,
There is a Voltage Reference Output, (VREF) on the ACS37002.
This output reports the zero-current voltage for the output channel
VIOUT allowing for differential measurement and a device referred
supply for the VOC pin.
mance is demonstrated in Figure 10 through and beyond the VOOR
.
Voltage Output Operating Range for VCC and
Output Modes, VOOR(Vcc, Mode)
Reference Voltage Temperature Drift (VRE)
VCC (V)
Bidrectional
±1.32
Unidirectional
+2.64
Reference Voltage Temperature Drift, or VRE, is defined as
the drift of VREF from room to hot or room to cold (25°C to
125/150°C or 25°C to –40°C respectively).
3.3
5
±2
+4
Offset Voltage (VOE
)
Offset Voltage, or VOE, is defined as the difference between QVO
and VREF (see Figure 9). VOE includes the drift of QVO minus
VREF from room to hot or room to cold (25°C to 125/150°C or
25°C to –40°C respectively).
Figure 9: Offset (VOFF) Between VIOUT and VREF
Figure 10: VOOR, VSAT and SENS with Full Scale
28
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Sensitivity (Sens)
Gain Selection Pins
The ACS37002 features external gain selection pins that config-
ures the device sensitivity. The gain select logic is latched based
on the pin voltage at startup. Either pin may be shorted directly
to VCC or GND, which is logic 1 or 0 respectively. Both pins
include an internal 1 MΩ pull-down resistor to GND. Exter-
nally floating pins will be interpreted as logic 0; if both pins are
floating, the device will be in the 00 configuration. Specific gain
select performance can be found in the selection Performance
Characteristics table. To change the gain of the device, refer to
Figure 21 in the Application and Theory section.
Sensitivity, or Sens, is the ratio of the output swing versus the
applied current through the primary conductor, IP. This current
causes a voltage deviation away from QVO on the VIOUT output
until VSAT. The magnitude and direction of the output volt-
age swing is proportional to the magnitude and direction of the
applied current. This proportional relationship between output
and input is Sensitivity and is defined as:
VOUT(I1) – VOUT(I2)
Sens =
I1 – I2
Full Scale (FS)
where I1 and I2 are two different currents, and where VIOUT(I1)
and VIOUT(I2) are the voltages of the device at the applied cur-
rents. VIOUT, I1, or I2 can be QVO with zero current.
Full Scale, or FS, is a method to relate an input and/or output to
the max input and/or output of the device. For example, 50%FS
of a 10A sensor is 5A, or 50% of its maximum input current. The
50% input of 5A will cause the output to move 50%, or 50%FS.
FS is used to interchangeably refer to input and output deviations
when discussing input steps, fault trip thresholds and relating
input to output performance. FSINPUT is the input bias that results
in FSOUTPUT and these two are directly related by the device
actual sensitivity. Both FS can be seen in Figure 10, labeled as
positive or negative FS input and FS output. The equation for
input referred FS for a 5V bidirectional device is:
Sensitivity Error (Esens
)
Sensitivity Temperature Drift, or Esens, is the drift of Sens from
room to hot or room to cold (25°C to 125°C or 25°C to –40°C
respectively). No trimming/programming is needed as tempera-
ture drift is compensated with Allegro’s factory trim.
FS = VOOR(5V,Bi)/SensActual= ±2V/SensActual
Note: that a percentage change in FSINPUT is equivalent to a
resultant percentage change of FSOUTPUT and visa versa.
Nonlinearity (ELIN
)
As the amount of field applied to the part changes, the sensitiv-
ity of the device can also change slightly. This is referred to as
linearity error or ELIN (see Figure 12). Consider two currents,
I1(1/2 FS) and I2(FS). Ideally, the sensitivity of the device is the
same for both fields. Linearity Error is calculated as the percent
change in sensitivity from one field to another. Error is calculated
separately for positive (ELIN(+)) and negative (ELIN(-)) currents,
and the percent errors are defined as:
where:
SensIx+ = (VIOUTIx+ – VREF) / Ix+
and
SensIx- = (VIOUTIx- – VREF) / Ix-
Ix are positive and negative currents through IP, such that
|I+2| = 2 × | I+1| and | I-2| = 2 × | I-1|.ELIN = max(ELIN(+) , ELIN(-)
Figure 11: Output Accuracy Pocket for Room and
Across Temperature
)
29
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Total Output Error (ETOT
)
Power Supply Offset Error (VPS)
The Total Output Error is the current measurement error from the Power Supply Offset Error or VPS is defined at the offset error in
sensor IC as a percentage of the actual applied current. This is
equivalent to the difference between the ideal output voltage and
the actual output voltage, divided by the ideal sensitivity, relative
to the current applied to the device, or simplified to:
mV between VCC and VCC ±10% VCC. For a 5 V device, this is 5
to 4.5 V and 5 to 5.5 V. For a 3.3 V device, this is 3.3 to 3 V and
3.3 to 3.6 V.
Offset Power Supply Rejection Ratio (PSRRO)
The Offset Power Supply Rejection Ratio or PSRRO is defined
as 20 × log of the ratio of the change of QVO in volts over a
±100 mV variable AC VCC centered at 5 V reported as dB in
a specified frequency range. This is an AC version of the VPS
parameter. The equation is shown below:
where
VIOUT_Actual(I±) = ±I × SensActual + QVOActual
and
VIOUT_Ideal(I±) = ±I × SensIdeal + VREF_Actual
Total Output Error incorporates all sources of error and is a func-
tion of current. At relatively high currents, Total Output Error will
be mostly due to sensitivity error, and at relatively low inputs,
Total Output Error will be mostly due to Offset Voltage (VOE). At
I = 0 A, Total Output Error approaches infinity due to the offset.
An example of total error at FS can be seen in Figure 12.
Power Supply Sensitivity Error (EPS)
Power Supply Sensitivity Error, or EPS, is defined as the percent
sensitivity error measured between VCC and VCC ±10%. For a
5 V device, this is 5 to 4.5 V and 5 to 5.5 V. For a 3.3 V device,
this is 3.3 to 3 V and 3.3 to 3.6 V.
Sensitivity Power Supply Rejection Ratio (PSRRS)
Note: Total Output Error goes to infinity as the amount of applied
field approaches 0 A.
The Sensitivity Power Supply Rejection Ratio or PSRRS is
defined as 20 × log of the ratio of the % change the sensitivity
over the % change in VCC (±100 mV variable AC VCC centered at
5 V) reported as dB in a specified frequency range. This is the AC
version of the EPS parameter. The equation is shown below:
Figure 12: Accuracy Error
30
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
FAULT BEHAVIOR
VOLTAGE OVERCURRENT PIN (VOC)
Overcurrent Fault (OCF)
The fault trip points can be set using the VOC pin as the direct
As the output swings, the Overcurrent Fault pin will trigger with
an active low flag if the sensed current exceeds its comparator
threshold. This is internally compared with either the factory-
analog input for the fault trip point. The VOC pin voltage can be
set using resistor dividers from VREF on bidirectional devices. The
fault performance is valid when VVOC is within the VOC Operating
Voltage Range or <0.1 V. The device will respond to voltage outside
of the defined valid performance region with varied results. For a
5 V bidirectional device, setting the VOC pin to 0.5 V selects the
minimum trip point, IFAULT(min), and setting the pin to 2 V selects the
maximum trip point, IFAULT(max) as defined by selection performance
tables. All voltages between 0.5 to 2 V for 5 V option and 0.33 to
1.321 V for 3.3 V option can linearly select a trip point between the
programmed thresholds or via the VOC voltage when VVOC
>
0.1 V. This flag trips symmetrically for the positive and negative
OCF operating point.
The implementation for the OCF circuitry is accurate over
temperature and does not require further temperature compensa-
tion as it is dependent on the Sens and VOFF parameters that are
factory-trimmed flat over temperature..
minimum and maximum levels, as shown in Figure 14. When VOC
0.1 V, the internal EEPROM fault level will be used.
<
OVERCURRENT FAULT OPERATING RANGE/POINT
The resulting equation for the fault is:
(IOCF-OR, IOCF-OP
)
VOC(V ) [V]
CC
Overcurrent Fault Operating Range is the functional range that
the OCF thresholds can be set in terms of percentage of full-scale
output swing. The Overcurrent Fault Operating Point is the spe-
cific point at which the OCF trigger will occur, and is set by either
VVOC or the factory default setting. The IOCF-OP can be seen in
Figure 13 as [9] along with the FAULT pin functionality.
OCF%FS [%] =
× 100 [%]
VOC(V )100% [V]
CC
IOCF [A] = OCF%FS [%] × IPR [A]
Table 1: VOC(Vcc) thresholds and corresponding percentage of the Full-Scale
Output for Bidirectional and Unidirectional operational modes
Fault Operation Point %FS
VOC(3.3V) (V)
VOC(5V) (V)
Bidirectional
Unidirectional
OVERCURRENT FAULT HYSTERESIS (IOCF-HYST
)
<0.1
100% (factory default) 50% (factory default)
0.330
0.466
0.661
0.826
0.991
1.156
1.321
0.5
0.75
1
50%
75%
25%
37.5%
50%
Overcurrent Fault Hysteresis or IOCF-HYST is defined as the
magnitude of percent FS that must drop before a fault assertion
will be cleared. This can be seen as the separation between the
voltages [9] to [10] in Figure 13. Note the MASK and HOLD
functionality are independent of each other. The ACS37002
comes standard with an OCFHYS of 120 mV (on the output) or
6%FS for a 5 V device and 9%FS for a 3.3 V device.
100%
125%
150%
175%
200%
1.25
1.5
1.75
2
62.5%
75%
85%
100%
9
10
ꢀꢁAUꢂꢃꢄmaꢉꢅ ꢊ
ꢋ.0 ꢌ ꢁS ꢄꢍidirectionalꢅ
ꢄ
ꢅꢆꢇ-ꢅPꢈꢉnaꢊleꢋ
ꢍꢆꢃrrentꢍ
ꢅꢆꢇ
hys
ꢄ
1.0 ꢌ ꢁS ꢄꢎnidirectionalꢅ
ꢅꢆꢇ-ꢅPꢈꢌisaꢊleꢋ
ꢀꢁAUꢂꢃ ꢄAꢅ
ꢁꢂꢃll-ꢃꢂ
ꢀꢁAUꢂꢃꢄminꢅ ꢊ
0.5 ꢌ ꢁS ꢄꢍidirectionalꢅ
ꢁ
ꢅꢆꢇ
Hi ꢀ
ꢎNꢌ
Hi ꢀ
ꢎNꢌ
Hi ꢀ
0.ꢋ5 ꢌ ꢁS ꢄꢎnidirectionalꢅ
ꢆꢇꢈꢄꢆ
ꢆꢇꢈꢄꢆ
ꢅmaꢉ
ꢈꢈ
ꢅmin
ꢈꢈ
ꢆꢇꢈ ꢄꢆꢅ
Figure 13: Fault Thresholds and OCF Pin Functionality
Figure 14: VOC Functional Range
31
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
OVERCURRENT FAULT ERROR (EOCF
)
OVERCURRENT FAULT HOLD TIME (tOCF-HOLD)
Fault Error or EOCF is the error between the IOCF-OP(actual) and
IOCF-OP(ideal).
Overcurrent Fault Hold Time or tOCF-HOLD is defined as the
minimum time OCF flag will be asserted after a sufficient OCF
event. After the hold time has been reached, the OCF will release
if the OCF condition has ended (seen in Figure 15 [G] until [J])
or persist if the OCF condition is still present (seen in Figure 17
[G] until [J]). Factory default is 0 ms.
OVERCURRENT FAULT RESPONSE TIME (tOCF
)
Overcurrent Response Time or tOCF is defined as the time from
the input reaches the operating point [9] (seen in Figure 15) until
the OCF pin falls below VFAULT-ON [G]. If the OCF Mask is
disabled, then tOCF is equal to tOCF-R seen as the time from [9]
until [F].
OVERCURRENT FAULT PERSIST
The ACS37002 has a fault persist option that will maintain the
OCF flag if a flag occurred until a POR event.
OVERCURRENT FAULT REACTION TIME (tOCF-R
)
OCF DISABLE
Overcurrent Reaction Time or tOCF-R is defined as the time from
the current input rising above IOCF-OP at point [9] in Figure 15 until
the OCF pin reaches VOCF-ON at point [F] with the OCF mask dis-
able. This is the time required for the device to recognize and clear
the fault, seen as the time between [10] until [I].
The ACS37002 has the ability to disable overcurrent fault func-
tionality; when this is disabled, the OCF pin will remain in high
Z.
OVERCURRENT FAULT MASK TIME (tOCF-MASK
)
Overcurrent Fault Mask Time or tOCF-MASK is defined as the
additional amount of time the OCF must be present beyond the
tOCF-R time (seen in Figure 15 [F] until [G]). This is to reduce
nuisance tripping of the FAULT pin. If an OCF occurs, but does
not persist beyond tOCF-R + tOCF-MASK, it is not reported by the
device (seen in Figure 16). This prevents short transient spikes
from causing erroneous OCF flagging. Factory default setting is
tOCF-MASK = 0 µs.
Figure 16: Fault Condition Clearing
Before Mask Time Is Reached
Figure 17: Fault Hold with Clear Fault After Hold Time
Figure 15: General Fault Timing.
Note: the MASK and HOLD functionality
are independent of each other
32
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
DYNAMIC RESPONSE PARAMETERS
ꢀꢁꢂUꢃꢄꢅꢆ
The descriptions in this section assume: temperature =25°C, and
output loads are within limits on Common Electrical table. The
step applied is a input step that corresponds to 1 V deviation on
the output, unless otherwise stated.
ꢀnꢁꢂt
ꢀꢁtꢂꢁt
100ꢀ
90ꢀ
Resꢀonse ꢁime ꢂtRꢃSPꢄNSꢃ
ꢅ
Propagation Time (tpd)
The time interval between a) when the sensed current reaches
10% of its stable value, and b) when the sensor output reaches
10% of its stable value for a step input. See Figure 18.
Rise ꢀime ꢁtRꢂ
Rise Time (tR)
The time interval between a) when the sensor reaches 10% of its
stable value, and b) when it reaches 90% of the stable value for a
step input. See Figure 18.
Proꢀagation ꢁelay ꢂtPꢁ
ꢃ
10ꢀ
Response Time (tRESPONSE
)
0ꢀ
ꢀime
The time interval between a) when the sensed current reaches
90% of its stable value, and b) when the sensor output reaches
90% of its stable value. See Figure 18.
Figure 18: Dynamic Response Parameters
Temperature Compensation
To help compensate for the effects temperature has on perfor-
mance, the ACS37002 has an integrated internal temperature sen-
sor. This sensor and compensation algorithms help to standardize
device performance over the full range of optimized tempera-
tures. This allows for room temperature system calibration and
validation of end-of-line modules.
Temperature Compensation Update Rate
There is an 8 ms update time that is required to maintain a valid
temperature compensated output; that is, temperature compensa-
tions are calculated and applied every 8 ms.
33
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
APPLICATION AND THEORY
Application Circuits
GS
Options
GS0
1
2
3
4
16
VOC Options
GND
15
(1) V
supplied VOC
REF
ꢎR
(2) Externally supplied VOC
)ꢏ
VREF
VOC = V
/(R
+R
REF× VOC
VOC
GS1
VREF
14
13
VOC = 0.2 V ↔2 V
ꢐidirectional Oꢆꢇꢈ
VOC
V
REF
V
REF
Options
R
R
ACS37002
Vref
VREF
VOC
VOC
5
12 VIOUT
VOC
R
V
VOC
External
Source
6
7
8
11
CC
VCC
10
R
PU
OCF
9
(3a) No VOC supply
EEPROM
(3b) No VOC supply
EEPROM
V
V
REF
REF
GS Options
OCF Options
R
Vref
GS = 00
GS0
GS = 01
VOC
VOC
V
V
Other
CC
GS1
GS0
(4) Non-inverting buffered VOC supply
VOC = V (1+R /R )
REF×
2
1
R
PU
GS1
ꢅnidirectional Oꢆꢇꢈ
GS = 00
V
CC
GS0
GS1
ꢆOꢉꢊꢋ
error will also
be gained into the
ꢌOC inꢀutꢄ ꢉhis
should be considered
when selecting or
using configuration 4.
OCF
V
REF
ꢌ
ꢍꢊF
R
VREF
OCF ꢀin can be ꢀulled
uꢀ to diꢁꢁerent suꢀꢀly
iꢁ needed, as long as
the ꢀin voltage does not
eꢂceed the OCF ꢃaꢂ
voltage ratingꢄ
VOC
GS = 11
V
CC
GS = 10
R2
R
1
GS0
GS1
GS0
GS1
V
CC
Figure 19: Applications Circuits for GAIN_SEL, VOC, and FAULT pin
These configurations are simplified to the network required for functionality.
Bypass and load capacitors are recommend for best performance.
34
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Theory and Functionality – VOC and OCF
Simplified
ꢀaꢁlt
ꢆꢆPRꢃM
ꢃꢄꢀ
ꢀaꢁlt
ꢇhreshold
ꢂꢃꢄ
ꢀaꢁlt
ꢅogic
ꢀaꢁlt
ꢀiltering
Signal
Path
...
...
Detailed
ꢀaꢁlt
ꢆꢆPRꢃM
ꢀaꢁlt ꢀiltering
ꢀaꢁlt ꢇhreshold
t
ꢋ 0,
Hꢃꢅꢍ
Range ꢋ 0-3 ms
t
ꢋ 0.5 ꢌs,
ꢃꢄꢀ
masꢊ
Range ꢋ 0-3 ꢌs
ꢂꢃꢄ
ꢀaꢁlt
ꢅogic
ꢈ0.ꢉ ꢂ
Signal
Path
...
...
ꢇime ꢍelay to
Maꢊe
ꢇime ꢍelay to
ꢎreaꢊ
ꢄonnection
ꢄonnection
Figure 20: OCF Signal Path Simplified and Detailed Blocks of Functionality
VOC DRIVEN BY NON-INVERTING BUFFERED VREF
POWER SUPPLY DECOUPLING CAPACITOR AND
OUTPUT CAPACITIVE LOADS
If the VOC pin is being driven by a non-inverted buffered VREF
,
it is important to consider that any error from the VREF pin will
be gained as well. For instance, if VREF error is +10 mV and the
gain = 4 for the non-inverting operational amplifier, then the
VOC pin will be 40 mV from the expected target. For unidirec-
tional devices, OCF would be subjected to an additional 4% error
due to the error propagation from VREF through the gain stage.
The higher the capacitive load on the outputs (VREF, VIOUT), the
larger the decoupling capacitor should be on the power supply
(VCC) to maintain performance.
CLOAD
0 nF
1 nF
3 nF
6 nF
CBYPASS
>100 nF
>100 nF
>1 µF
>10 µF
35
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
desired configuration voltage (VH(SEL) or VL(SEL)) at or before
Dynamically Change Gain in a System
VCC > VPOR(H) in order to successfully change the device gain.
The GAIN_SEL pin voltage is latched at startup, and any changes
to the pin voltages after the devices VIOUT comes out of high Z
will not affect gain. The cycle time to complete this operation is
The ACS37002 has GAIN_SEL pins that are used to change the
gain of the device on startup. If a more dynamic gain is desired,
then reduce VCC below VPOR(L) and restart the device by return-
ing VCC to the nominal voltage with the new desired GAIN_SEL
configuration. The GAIN_SEL pin voltage must greater than the
up to 2 × tPOD
.
Figure 21: GAIN_SEL Dynamic Gain Changing Timing Diagram
36
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
THERMAL PERFORMANCE
The thermal capacity of the ACS37002 should be verified by the
Thermal Rise vs. Primary Current
end user in the application’s specific conditions. The maximum
junction temperature, TJ(MAX) (165℃), should not be exceeded.
Further information on this application testing is available in
the DC and Transient Current Capability application note on the
Allegro website.
Self-heating due to the flow of current should be considered dur-
ing the design of any current sensing system. The sensor, printed
circuit board (PCB), and contacts to the PCB will generate heat
as current moves through the system.
The thermal response is highly dependent on PCB layout, copper
thickness, cooling techniques, and the profile of the injected cur-
rent. The current profile includes peak current, current “on-time”,
and duty cycle. While the data presented in this section was
collected with direct current (DC), these numbers may be used
to approximate thermal response for both AC signals and current
pulses.
Evaluation Board Layout
Thermal data shown in Figure 22 and Figure 23 was collected
using the ASEK37002 Evaluation Board (TED-0002825). This
board includes 750 mm2 of 4 oz. copper (0.1388 mm) connected
to pins 1 through 4, and to pins 5 through 8, with thermal vias
connecting the layers. Top and bottom layers of the PCB are
shown below in Figure 24.
The plot in Figure 22 shows the measured rise in steady-state die
temperature of the ACS37002 versus continuous current at an
ambient temperature, TA, of 25 °C. The thermal offset curves may
be directly applied to other values of TA. Conversely, Figure 23
shows the maximum continuous current at a given TA. Surges
beyond the maximum current listed in Figure 24 are allowed
given the maximum junction temperature, TJ(MAX) (165℃), is
not exceeded.
Figure 22: Self heating in
the MA and LA package due to current flow
Figure 24: Top and Bottom Layers for ASEK37002
Evaluation Board
Gerber files for the ASEK37002 evaluation board are available
for download from the Allegro website. See the technical docu-
ments section of the ACS37002 webpage.
Figure 23: Maximum Continuous Current
at a Given TA
37
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
PACKAGE OUTLINE DRAWINGS
For Reference Only – Not for Tooling Use
(Reference MS-013AA)
NOT TO SCALE
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
8°
10.30 0.20
0°
16
0.33
0.20
D
1.06
7.50 0.10
10.30 0.33
0.46
D
A
1.27
0.40
1.40 REF
1
2
Branded Face
0.25 BSC
SEATING PLANE
16X
CC
GAUGE PLANE
2.65 MAX
0.10
C
SEATING
PLANE
0.30
0.10
1.27 BSC
0.51
0.31
1.27
0.65
16
NNNNNNN
LLLLLLLL
2.25
1
B
Standard Branding Reference View
L
9.50
N = Device part number
= Assembly Lot Number, first eight characters
A
Terminal #1 mark area
B
C
Branding scale and appearance at supplier discretion
1
2
Reference land pattern layout (reference IPC7351 SOIC127P600X175-8M);
all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
C
PCB Layout Reference View
D
Hall elements; not to scale
Figure 25: Package MA, 16-Pin SOICW
38
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
ꢉ0.ꢠ0 ꢷ0.20
ꢥꢸ
0ꢸ
ꢉꢢ
ꢱ2
ꢱ
0.ꢠꢠ
0.20
ꢱꢉ
ꢊ.50 ꢷ0.ꢉ0 ꢉ0.ꢠ0 ꢷ0.ꢠꢠ
2.ꢯꢢꢢ ꢉ.5ꢉꢠ
ꢂ
ꢱ
ꢱ
ꢉ.ꢯ0 ꢖꢁꢰ
ꢉ
2
ꢉ.2ꢊ
0.ꢯ0
ꢋꢎꢒꢑꢙꢍꢙ ꢰꢒꢘꢍ
0.25 ꢋꢀC
ꢀꢁꢂꢃꢄꢅꢆ ꢇꢈꢂꢅꢁ
ꢆꢂꢌꢆꢁ ꢇꢈꢂꢅꢁ
C
ꢉꢢꢮ
ꢀꢁꢂꢃꢄꢅꢆ
ꢇꢈꢂꢅꢁ
0.ꢉ0
C
ꢉ.2ꢊ ꢋꢀC
2.ꢢ5 ꢦꢂꢣ
0.5ꢉ
0.ꢠꢉ
0.ꢠ0
0.ꢉ0
ꢂCꢀꢠꢊ002 ꢟ5 Vꢧ
ꢂCꢀꢠꢊ002 ꢟꢠ.ꢠ Vꢧ
ꢂCꢀꢠꢊ002
ꢈꢝꢛ ꢅꢞꢏꢶꢍꢎ
ꢂCꢀꢠꢊ002
ꢈꢝꢛ ꢅꢞꢏꢶꢍꢎ
ꢰꢝꢎ ꢖꢍꢗꢍꢎꢍꢑꢘꢍ ꢡꢑꢓꢜꢨ ꢑꢝꢛ ꢗꢝꢎ ꢛꢝꢝꢓꢐꢑꢭ ꢞꢩꢍ ꢟꢎꢍꢗꢍꢎꢍꢑꢘꢍ ꢦꢀꢤ0ꢉꢠꢂꢂꢧ
ꢱꢐꢏꢍꢑꢩꢐꢝꢑꢩ ꢐꢑ ꢏꢐꢓꢓꢐꢏꢍꢛꢍꢎꢩ
ꢱꢐꢏꢍꢑꢩꢐꢝꢑꢩ ꢍꢲꢘꢓꢞꢩꢐꢳꢍ ꢝꢗ ꢏꢝꢓꢙ ꢗꢓꢒꢩꢴꢵ ꢭꢒꢛꢍ ꢶꢞꢎꢎꢩꢵ ꢒꢑꢙ ꢙꢒꢏꢶꢒꢎ ꢚꢎꢝꢛꢎꢞꢩꢐꢝꢑꢩ
ꢁꢲꢒꢘꢛ ꢘꢒꢩꢍ ꢒꢑꢙ ꢓꢍꢒꢙ ꢘꢝꢑꢗꢐꢭꢞꢎꢒꢛꢐꢝꢑ ꢒꢛ ꢩꢞꢚꢚꢓꢐꢍꢎ ꢙꢐꢩꢘꢎꢍꢛꢐꢝꢑ ꢬꢐꢛꢴꢐꢑ ꢓꢐꢏꢐꢛꢩ ꢩꢴꢝꢬꢑ
ꢉ
ꢉ
ꢃꢍꢎꢏꢐꢑꢒꢓ ꢔꢉ ꢏꢒꢎꢕ ꢒꢎꢍꢒ
ꢂ
ꢋ
ꢀꢛꢒꢑꢙꢒꢎꢙ ꢋꢎꢒꢑꢙꢐꢑꢭ ꢖꢍꢗꢍꢎꢍꢑꢘꢍ Vꢐꢍꢬ
ꢋ
ꢋꢎꢒꢑꢙꢐꢑꢭ ꢩꢘꢒꢓꢍ ꢒꢑꢙ ꢒꢚꢚꢍꢒꢎꢒꢑꢘꢍ ꢒꢛ ꢩꢞꢚꢚꢓꢐꢍꢎ ꢙꢐꢩꢘꢎꢍꢛꢐꢝꢑ
C
ꢈꢐꢑꢍ ꢉꢹ ꢇꢒꢎꢛ ꢅꢞꢏꢶꢍꢎ
ꢈꢐꢑꢍ 2ꢹ ꢰꢐꢎꢩꢛ ꢺ ꢘꢴꢒꢎꢒꢘꢛꢍꢎꢩ ꢝꢗ ꢂꢩꢩꢍꢏꢶꢓꢜ ꢈꢝꢛ ꢅꢞꢏꢶꢍꢎ
ꢖꢍꢗꢍꢎꢍꢑꢘꢍ ꢓꢒꢑꢙ ꢚꢒꢛꢛꢍꢎꢑ ꢓꢒꢜꢝꢞꢛ ꢟꢎꢍꢗꢍꢎꢍꢑꢘꢍ ꢄꢇCꢊꢠ5ꢉ
ꢀꢡꢄCꢉ2ꢊꢇꢢ00ꢣꢉꢊ5ꢤꢥꢦꢧꢨ ꢒꢓꢓ ꢚꢒꢙꢩ ꢒ ꢏꢐꢑꢐꢏꢞꢏ ꢝꢗ 0.20 ꢏꢏ ꢗꢎꢝꢏ ꢒꢓꢓ
ꢒꢙꢪꢒꢘꢍꢑꢛ ꢚꢒꢙꢩꢨ ꢒꢙꢪꢞꢩꢛ ꢒꢩ ꢑꢍꢘꢍꢩꢩꢒꢎꢜ ꢛꢝ ꢏꢍꢍꢛ ꢒꢚꢚꢓꢐꢘꢒꢛꢐꢝꢑ ꢚꢎꢝꢘꢍꢩꢩ
ꢎꢍꢫꢞꢐꢎꢍꢏꢍꢑꢛꢩ ꢒꢑꢙ ꢇCꢋ ꢓꢒꢜꢝꢞꢛ ꢛꢝꢓꢍꢎꢒꢑꢘꢍꢩ
ꢻꢒꢓꢓ ꢍꢓꢍꢏꢍꢑꢛꢩ ꢟꢱꢉꢵ ꢱ2ꢧꢨ ꢑꢝꢛ ꢛꢝ ꢩꢘꢒꢓꢍ
ꢱ
ꢉ.2ꢊ
ꢉ.2ꢊ
0.ꢢ5
ꢉꢢ
0.ꢢ5
ꢉꢢ
ꢉ.ꢢ5
2.25
ꢺ.ꢊ5
ꢺ.50
ꢉ
2
ꢉ
2
ꢇCꢋ ꢈꢒꢜꢝꢞꢛ ꢖꢍꢗꢍꢎꢍꢑꢘꢍ Vꢐꢍꢬ
ꢻꢐꢭꢴꢤꢄꢩꢝꢓꢒꢛꢐꢝꢑ ꢇCꢋ ꢈꢒꢜꢝꢞꢛ ꢖꢍꢗꢍꢎꢍꢑꢘꢍ Vꢐꢍꢬ
C
Figure 26: Package LA, 16-PIN SOICW
39
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
400 kHz, High Accuracy Current Sensor
ACS37002
with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package
Revision History
Number
Date
Description
–
June 24, 2020
July 8, 2020
Initial release
Updated Features and Benefits, Selection Guide (page 2), Working Voltage values (page 4),
Footnote 2 (pages 10-19), Voltage Overcurrent Pin section (page 30), and Branding (page 38)
1
2
Updated Features and Benefits, Description, and Figure 1 (page 1); added UL certification (page 2);
updated Selection Guide table (page 2), Forward Output Voltage and Reverse Output Voltage
symbols (page 3), Isolation Characteristics and MA Package Specific Performance tables (page 4),
Supply Voltage, Supply Bypass Capacitor, Primary Conductor Resistance, Power-On Reset
Voltage, Power-On Time, Undervoltage and Undervoltage Detection Threshold (page 7), Rise
Time, Response Time, Propagation Delay Time, Noise Density (page 8), VOC Operating Voltage
Range, OCF Reaction Time, OCF Mask, OCF Response Time (page 9); added footnote 4 (page 9);
Performance Characteristic tables (pages 10-19); updated Current Sensing Range and Sensitivity
values (pages 21-23); added Functional Description (pages 24-27), Definitions of Operating and
Performance Characteristics (pages 28-32); updated Figure 20 (page 34),Theory and Functionality
(pages 35-36).
October 16, 2020
Updated UVD and OVD Threshold test conditions (page 7); removed Overshoot and Settling Time
sections and Figure 19 (page 33); fixed Figure 18 (page 33) graphical issue; updated Figure 19
(page 34), and other minor editorial updates.
3
December 16, 2020
Copyright 2020, Allegro MicroSystems.
Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit
improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the
information being relied upon is current.
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of
Allegro’s product can reasonably be expected to cause bodily harm.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor
for any infringement of patents or other rights of third parties which may result from its use.
Copies of this document are considered uncontrolled documents.
For the latest version of this document, visit our website:
www.allegromicro.com
40
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
相关型号：
ACS373K/SAMPLE-02
AC SERIES, 8-BIT DRIVER, TRUE OUTPUT, CDFP20, METAL SEALED, CERAMIC, FP-20
RENESAS
©2020 ICPDF网 联系我们和版权申明