ATS19520LSNBTN-RSWHPYK-A [ALLEGRO]
Vibration-Tolerant Hall-Effect Transmission Speed and Direction Gear Tooth Sensor IC;
| 型号： | ATS19520LSNBTN-RSWHPYK-A |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | Vibration-Tolerant Hall-Effect Transmission Speed and Direction Gear Tooth Sensor IC |
| 文件： | 总13页 (文件大小：915K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ATS19520
Vibration-Tolerant Hall-Effect
Transmission Speed and Direction Gear Tooth Sensor IC
FEATURES AND BENEFITS
DESCRIPTION
• Differential Hall-effect sensor measures ferrous targets
with inherent stray field immunity
TheATS19520isanadvancedHall-effectintegratedcircuit(IC)
that uses an integrated back-bias magnet to measure the speed
anddirectionofrotatingferroustargets.Thepackagefeaturesan
integratedcapacitorforelectromagneticcompatibility(EMC).
• SolidSpeed Digital Architecture™ provides robust,
adaptive performance with advanced algorithms that
provide vibration immunity over the full target pitch
• Integrated solution includes a back-bias magnet and
capacitor in a single overmolded package
• ISO 26262:2011 ASIL B with integrated diagnostics and
certified safety design process (pending assessment)
• Two-wire current source output pulse-width protocol
supporting speed, direction, and ASIL error reporting
• EEPROM enables factory traceability
The ATS19520 employs intelligent algorithms that allow
stable operation during vibration and highly dynamic air gap
environmentscommontotransmissionapplications.Inaddition,
the differential sensing offers inherent rejection of interfering
common-mode magnetic fields.
The ATS19520 was developed in accordance with ISO
26262:2011 as a hardware safety element out of context with
ASILB capability (pending assessment) for use in automotive
safety-related systems when integrated and used in the manner
prescribed in the applicable safety manual and datasheet.
2
-
The ATS19520 is provided in a 3-pin SIP package (suffix
SN) that is lead (Pb) free, with tin leadframe plating. The SN
package includes an IC, magnet, and capacitor integrated into
a single overmold, with an additional molded lead-stabilizing
bar for robust shipping and ease of assembly.
PACKAGE: 3-pin SIP (suffix SN)
Not to scale
VCC
+
ADC
Output
-
Digital
Controller
Current
ESD
Generator
Analog-to-Digital
Front End
and
Amplification
Signal Conditioning
+
ADC
-
GND
Regulator
EEPROM
Diagnostics
+
Oscillator
-
Functional Block Diagram
ATS19520-DS, Rev. 2
MCO-0000588
April 5, 2019
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
SELECTION GUIDE*
Part Number
Packing
ATS19520LSNBTN-RSWHPYU
Tape and reel, 13-in. reel, 800 pieces per reel
* Not all combinations are available. Contact Allegro sales for availability and pricing of custom
programming options.
Configuraꢀon Opꢀons
ATS19520
L
SN
TN
-
ASIL Protocol:
A – ASIL Protocol Enabled
Blank – ASIL Protocol Disabled
Extended Sudden Air Gap Opꢀons
K – Timed Resets Enabled
U – Feature Not Enabled
Calibraꢀon Mode Non-Direcꢀon Pulses
O – Blanked, no output during calibraꢀon
Y – Pulses allowed during calibraꢀon
Running Mode Non-Direcꢀon Pulses
B – Blanked, no output during Running mode
P – Pulses allowed during Running mode
Vibraꢀon Immunity/Direcꢀon Change
L – Low vibraꢀon immunity with immediate direcꢀo-nchange detecꢀon
H – High vibraꢀon immunity
Pulse Widths (Typical)
I – Intermediate, Forward = 60 µs, Reverse = 120 µs, Non-Direcꢀon = 30 µs
N – Narrow, Forward = 45 µs, Reverse = 90 µs, Non-Direcꢀon= 180 µs
W – Wide, Forward = 45 µs, Reverse = 180 µs, Non-Direcꢀon = 360 µs
Number of Pulses
S – Single, one pulse per tooth-valley pair
Rotaꢀon Direcꢀon
F – Forward, pin 1 to pin 3
R – Forward, pin 3 to pin 1
Packing Type
Internal Capacitor
B – 10 nF capacꢀtor
L – 22 nF capacitor
Package Designaꢀon
Operaꢀng Temperature Range
Allegro Idenꢀfier and Device Type
2
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
VCC
Notes
Refer to Power Derating section
Rating
28
Units
V
Supply Voltage
Reverse Supply Voltage
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
VRCC
TA
–18
V
Range L
–40 to 150
165
ºC
ºC
ºC
TJ(max)
Tstg
–65 to 170
PINOUT DIAGRAM AND TERMINAL LIST
Terminal List Table
Number
Name
VCC
VCC
GND
Function
1
2
3
Supply voltage
Supply voltage
Ground
1
2
3
Package SN, 3-Pin SIP Pinout Diagram
Internal Discrete Capacitor Ratings
Characteristic
Nominal Capacitance
Symbol
Notes
Rating
10
Units
nF
B
L
Connected between VCC and GND; refer to
Figure 1
CSUPPLY
22
nF
VCC
VCC
1
ATS19520
IC
3 GND
VOUT = ICC × RL
CL
RL
Figure 1: Typical Application Circuit
3
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
OPERATING CHARACTERISTICS: Valid throughout full operating and temperature ranges, unless otherwise specified
Characteristic
GENERAL
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
Operating, TJ < TJ(max), voltage across pin 1 and
pin 3; does not include voltage across RL
Supply Voltage [2]
VCC
4
–
24
V
Undervoltage Lockout
VCC(UV)
IRCC
VCC 0 V → 5 V or 5 V → 0 V
–
3.6
–
3.95
–
V
Reverse Supply Current [3]
VCC = VRCC(max)
–10
5.9
12
mA
mA
mA
ICC(LOW) Low-current state
ICC(HIGH) High-current state
7
8
14
16
Supply Current
ICC(HIGH)
ICC(LOW)
/
Ratio of high current to low current (isothermal)
Refer to Figure 7
1.9
1.5
–
–
–
–
ASIL Safety Current
IRESET
3.9
mA
PROTECTION CIRCUITS
Supply Zener Clamp Voltage
POWER-ON CHARACTERISTICS
Power-On State
VZsupply
ICC = 19 mA, TA = 25°C
28
–
–
–
1
V
POS
tPO
V
CC > VCC(min), as connected in Figure 1
ICC(LOW)
–
mA
ms
Time from VCC > VCC(min), until device has
entered calibration
Power-On Time [4]
OUTPUT PULSE CHARACTERISTICS, PULSE PROTOCOL [5]
Voltage measured at pin 2 in Figure 1,
RL = 100 Ω, CL = 10 pF, measured
between 10% and 90% of signal
SNL variant
SNB variant
SNL variant
SNB variant
0
0
0
0
4.5
2
8
4
8
4
μs
μs
μs
μs
Output Rise Time
Output Fall Time
tr
tr
Voltage measured at pin 3 in Figure 1,
RL = 100 Ω, CL = 10 pF, measured
between 10% and 90% of signal
4.5
2
Pulse Width, ASIL Warning
Pulse Width, ASIL Critical
tw(ASILwarn) Refer to Figure 7
tw(ASILcrit) Refer to Figure 7
63
4
–
–
121
8
μs
ms
Continued on next page...
4
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
OPERATING CHARACTERISTICS (continued): Valid throughout full operating temperature ranges,
unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
INTERMEDIATE PULSE WIDTH OPTION (PART NUMBER -xxIxxxx)
Threshold to Enter High-Speed Mode
Threshold to Exit High-Speed Mode
Pulse Width, Forward Rotation
Pulse Width, Reverse Rotation
Pulse Width, High-Speed
fHIGH
fLOW
TCYCLE frequency increasing
TCYCLE frequency decreasing
TCYCLE frequency < fLOW
TCYCLE frequency < fLOW
TCYCLE frequency > fHIGH
0.935
0.85
51
1.1
1
1.265
1.15
69
kHz
kHz
μs
tw(FWD)
tw(REV)
tw(HS)
tw(ND)
60
120
30
30
102
25
138
35
μs
μs
Pulse Width, Non-Direction
25
35
μs
Operating Frequency,
Forward Rotation [6][7][8]
fFWD
fREV
fND
0
0
0
–
–
–
12
12
12
kHz
kHz
kHz
Operating Frequency,
[6][7][8]
Reverse Rotation
Operating Frequency,
Non-Direction Pulses [6][8]
NARROW PULSE WIDTH OPTION (PART NUMBER -xxNxxxx)
Pulse Width, Forward Rotation
Pulse Width, Reverse Rotation
Pulse Width, Non-Direction
tw(FWD)
tw(REV)
tw(ND)
38
76
45
90
52
μs
μs
μs
104
207
153
180
Operating Frequency,
Forward Rotation [6][8]
fFWD
fREV
fND
0
0
0
–
–
–
12
7
kHz
kHz
kHz
Operating Frequency,
Reverse Rotation [6][8]
Operating Frequency,
Non-Direction Pulses [6][8]
4
WIDE PULSE WIDTH OPTION (PART NUMBER -xxWxxxx)
Pulse Width, Forward Rotation
Pulse Width, Reverse Rotation
Pulse Width, Non-Direction
tw(FWD)
tw(REV)
tw(ND)
38
45
52
μs
μs
μs
153
306
180
360
207
414
Operating Frequency,
Forward Rotation [6][8]
fFWD
fREV
fND
0
0
0
–
–
–
12
4
kHz
kHz
kHz
Operating Frequency,
Reverse Rotation [6][8]
Operating Frequency,
Non-Direction Pulses [6][8]
2.2
Continued on next page...
5
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
OPERATING CHARACTERISTICS (continued): Valid throughout full operating temperature ranges,
unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ. [1]
Max.
Unit
INPUT CHARACTERISTICS AND PERFORMANCE
Using Allegro 60-0 reference target; tested at
1000 rpm [9]
Air Gap Range
0.5
–
–
2.8
mm
G
Differential Magnitude valid for both differential
magnetic channels.
User-Induced Offset
–400
400
Operate Point
Release Point
BOP
BRP
% of peak-to-peak IC-processed signal
% of peak-to-peak IC-processed signal
Required amount of amplitude separation
–
–
70
30
–
–
%
%
Switch Point Separation
BDIFF(SP-SEP) between channels at each BOP and BRP
occurrence; refer to Figure 4
20
–
–
%BDIFF(pk-pk)
BSEQ(n+1)
BSEQ(n)
/
Signal cycle-to-cycle variation
(refer to Figure 2)
0.7
0.1
–
–
1.3
–
–
–
Allowable Differential Sequential
Signal Variation
BSEQ(n+i)
BSEQ(n)
/
Overall signal variation
(refer to Figure 2)
Periods after tPO completed and first valid speed
and direction output. Constant direction of rotation.
4 ×
TCYCLE
Initial Calibration
TCAL
–
–
–
Refer to Figure 3 for definition of TCYCLE
.
High Vibration (-xxxHxxxx variant)
Low Vibration (-xxxLxxxx variant)
High Vibration (-xxxHxxxx variant)
1 × TCYCLE
1 × TCYCLE
1 × TCYCLE
–
–
–
–
–
–
–
–
–
Vibration Immunity (Startup)
Vibration Immunity (Running Mode)
Timer Period
0.12 ×
TCYCLE
Low Vibration (-xxxLxxxx variant)
–
–
–
–
s
Timed reset intervals with no output pulses
(-xxxxxxxK variant)
–
0.5
THERMAL CHARACTERISTICS
Package Thermal Resistance [10]
RθJA
Single-layer PCB with copper limited to solder pads
–
150
–
°C/W
[1] Typical values are at TA = 25°C and VCC = 12 V. Performance may vary for individual units, within the specified maximum and minimum limits.
[2] Maximum voltage must be adjusted for power dissipation and junction temperature; see representative for Power Derating discussions.
[3] Negative current is defined as conventional current coming out of (sourced from) the specified device terminal.
[4] Output transients prior to tPO should be ignored.
[5] Timing from start of rising output transition. Measured pulse width will vary on load circuit configurations and thresholds. Pulse width measured at threshold of (ICC(HIGH)
+ ICC(LOW)) / 2 for non-ASIL pulses and (IRESET + ICC(LOW)) / 2 for ASIL pulses.
[6] Maximum Operating Frequency is determined by satisfactory separation of output pulses. If shorter low-state durations can be resolved, the maximum fREV and fND may
be higher. Does not appy to -xxIxxxx variant or fFWD
.
[7] Direction information is not available when frequency > fHIGH for the Intermediate Pulse Width option.
[8] Zero-speed is not met when the xxxxxxK-variant is implemented due to the inclusion of a timed reset.
[9] Speed-related effects on maximum air gap are highly dependent upon specific target geometry. Consult with Allegro field applications engineering for aid with assess-
ment of target geometries.
[10] Additional thermal information is available on the Allegro website.
6
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
BSEQ(n)
BSEQ(n + 1)
BSEQ(n+i) , i ≥ 2
Figure 2: Differential Signal Variation
Ferrous Target
Tooth
Valley
TCYCLE
BDIFF
Target Cycle; the amount of rotation that moves one tooth and
valley across the sensor.
TCYCLE
=
=
BDIFF
The differential magnetic flux density sensed by the sensor.
Figure 3: Definition of TCYCLE
TCYCLE
BDIFF(SP)
BDIFF(BOP)
(BOP
)
BDIFF(pk-pk)
(BRP
)
BDIFF(BRP)
BDIFF(SP)
BDIFF(SP)
BDIFF(pk-pk)
BDIFF(SP-SEP)
=
Figure 4: Definition of Switch Point Separation
7
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
Reference Target 60-0 (60 Tooth Target)
Characteristics
Outside Diameter
Symbol
Test Conditions
Typ.
Units
Symbol Key
ht
Do
Do
Outside diameter of target
120
mm
F
Breadth of tooth, with respect
to branded face
Face Width
F
t
6
3
3
mm
deg.
deg.
Length of tooth, with respect
to branded face
Branded Face
of Package
Circular Tooth Length
Circular Valley Width
Length of valley, with respect
to branded face
tv
Tooth Whole Depth
Material
ht
3
–
mm
–
Air Gap
Low Carbon Steel
Branded Face
of Sensor
Reference
Target 60-0
8
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
FUNCTIONAL DESCRIPTION
Direction Detection
Sensing Technology
The sensor IC contains a single-chip Hall-effect circuit that sup-
ports a trio of Hall elements. These are used in differential pairs
to provide electrical signals containing information regarding
edge position and direction of target rotation. The ATS19520 is
intended for use with ferrous targets.
The sensor IC compares the relative phase of its two differential
channels to determine which direction the target is moving. The
relative switching order is used to determine the direction, which
is communicated through the output protocol.
Data Protocol Description
After proper power is applied to the sensor IC, it is capable of
providing digital information that is representative of the mag-
netic features of a rotating target. The waveform diagrams in
Figure 5 present the automatic translation of the target profiles,
through their induced magnetic profiles, to the digital output
signal of the sensor IC.
When a target passes in front of the device (opposite the branded
face of the package case), the ATS19520 generates an output
pulse for each tooth of the target. Speed information is provided
by the output pulse rate, while direction of target rotation is
provided by the duration of the output pulses. The sensor IC can
sense target movement in both the forward and reverse directions.
FORWARD ROTATION
As shown in panel A in Figure 6, when the target is rotating such
that a tooth near the sensor IC – of -Fxxxxxx variant – passes
from pin 1 to pin 3, this is referred to as forward rotation. This
direction is opposite for the -Rxxxxxx variant. Forward rotation
is indicated by output pulse widths of tw(FWD)
.
REVERSE ROTATION
As shown in panel B in Figure 6, when the target is rotating such
that a tooth passes from pin 3 to pin 1, it is referred to as reverse
rotation for the -Fxxxxxx variant. Reverse rotation is indicated by
output pulse widths of tw(REV)
.
Pin 3
Pin 1
Panel A
Branded Face
of Package
Rotating Target
(Forward Rotation)
Pin 3
Pin 1
Panel B
Branded Face
of Package
Rotating Target
(Reverse Rotation)
Figure 5: Magnetic Profile
Figure 6: Target Rotation (F Variant Shown)
The magnetic profile reflects the features of the target, allowing the
sensor IC to present an accurate digital output.
9
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
ASIL Protocol
The -xxxxxxx-A variant contains diagnostic circuitry that will
continuously monitor occurrences of failure defects within the IC.
Refer to Figure 7 for the output protocol of the ASIL Safe State
after an internal defect has been detected. Error Protocol will result
from faults which cause incorrect signal transmission (i.e., too few
or too many output pulses).
Note: If a fault exists continuously, the device will attempt recovery
indefinitely. Refer to the ATS19520 Safety Manual for additional
details on the ASIL Safe State Output Protocol.
ꢀarget
ꢁalley
ꢀooth
ꢄꢅꢅꢆHꢄꢇHꢈ
Normal
ꢂꢃeration
ꢄꢅꢅꢆꢉꢂꢊꢈ
ꢋaꢌlt
ꢄꢅꢅꢆHꢄꢇHꢈ
ꢋaꢌlt
Protocol
ꢄꢅꢅꢆꢉꢂꢊꢈ
ꢄRꢍSꢍꢀ
twꢆASꢄꢉwarnꢈ
or
tPꢂ
twꢆASꢄꢉcritꢈ
Figure 7: Output Protocol (ASIL Safe State)
10
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
POWER DERATING
The device must be operated below the maximum junction tem-
perature of the device (TJ(max)). Under certain combinations of
peak conditions, reliable operation may require derating supplied
power or improving the heat dissipation properties of the appli-
cation. This section presents a procedure for correlating factors
affecting operating TJ. (Thermal data is also available on the
Allegro website.)
A worst-case estimate, PD(max), represents the maximum allow-
able power level (VCC(max), ICC(max)), without exceeding TJ(max)
at a selected RθJA and TA
,
Example: Reliability for VCC at TA=150°C, package SN, using a
single-layer PCB.
Observe the worst-case ratings for the device, specifically:
RθJA =150°C/W, TJ(max) =165°C, VCC(max) = 24 V, and ICC(avg)
=
The Package Thermal Resistance (RθJA) is a figure of merit sum-
marizing the ability of the application and the device to dissipate
heat from the junction (die), through all paths to the ambient air.
Its primary component is the Effective Thermal Conductivity (K)
of the printed circuit board, including adjacent devices and traces.
Radiation from the die through the device case (RθJC) is relatively
small component of RθJA. Ambient air temperature (TA) and air
motion are significant external factors, damped by overmolding.
14.6 mA. ICC(avg) is computed using ICC(LOW)(max) and ICC(HIGH)
(max), with a duty cycle of 83% computed from tw(REV)(max) on-
time at 4 kHz maximum operating frequency.
Calculate the maximum allowable power level, PD(max). First,
invert equation 3:
ΔTmax = TJ(max) – TA = 165°C–150°C = 15°C
This provides the allowable increase to TJ resulting from internal
power dissipation. Then, invert equation 2:
The effect of varying power levels (Power Dissipation, PD), can
be estimated. The following formulas represent the fundamental
relationships used to estimate TJ, at PD.
ꢀꢀꢀꢀPD(max) = ΔTmax ÷RθJA =15°C÷150°C/W=100 mW
Finally, invert equation 1 with respect to voltage:
PD = VIN
I
(1)
(2)
(3)
×
IN
ꢀ VCC(est) = PD(max) ÷ ICC(avg) = 100 mW÷14.6 mA= 6.8 V
ꢀ
ꢀ
ΔT = PD
R
θJA
×
The result indicates that, at TA, the application and device cannot
dissipate adequate amounts of heat at operating voltages above
6.8 V at 150°C.
TJ = TA + ΔT
For example, given common conditions such as: TA= 25°C,
VCC = 12 V, ICC = 14 mA, and RθJA = 150°C/W, then:
Compare VCC(est) to VCC(max). If VCC(est) ≤ VCC(max), then reli-
able operation between VCC(est) and VCC(max) requires enhanced
RθJA. If VCC(est) ≥ VCC(max), then operation between VCC(est) and
VCC(max) is reliable under these conditions.
PD = VCC
I
= 12 V 14 mA = 168 mW
CC
×
×
ꢀ
ΔT = PD
R
= 168 mW 150°C/W = 25.2°C
θJA
×
×
TJ = TA + ΔT = 25°C + 25.2°C = 50.2°C
11
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
PACKAGE OUTLINE DRAWING
For Reference Only – Not for Tooling Use
(Reference DWG-0000429, Rev. 4)
Dimensions in millimeters – NOT TO SCALE
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
7.6ꢀ 0.10
2 × 7°
2 × 10°
B
G
ꢀ.00 0.10
2.375
C
Ø2.00 REF
Ejector Pin
1.50
1.50
1.1ꢀ 0.0ꢀ
F2
F
2.89
F3
F
F
F
B
ꢀ.78 0.10
0.90 REF
0.60 REF
F
F1
Branded
Face
Ø8.00 0.10
2
3
1
2.73 REF
0.49 REF
2 × 7°
A
2 × 10°
0.51 REF
0.2ꢀ 0.0ꢀ
Plating Included
2.ꢀ4 0.10
4ꢀ°
4.03 REF
1.00 0.10
3.03 0.10
ꢀ.80 REF
23.36 REF
1ꢀ.ꢀ8 0.10
19.24 REF
9.20 REF
4ꢀ°
1.10 REF
1.00 REF
1.18 REF
2.00 0.10
0.30 REF
E
4 × Ø1.00 REF
Ejector Pin
0.90 REF
1.60 0.10
7.00 0.10
Notes:
Lot Number
AXXNNNNNX
Date Code
A
B
C
D
E
F
Dambar removal protrusion (12×)
Tie bars (8×)
2
3
1
Active Area Depth, 0.40 0.0ꢀ mm
D Standard Branding Reference View
Branding scale and appearance at supplier discretion
Molded lead bar for preventing damage to leads during shipment
Hall elements (F1, F2, F3); not to scale
Lines 1, 2, 3, 4: Up to 10 characters, centered
Line 1: Logo A
Line 2: Characters 5, 6, 7, 8, 9, 10, 11 of
Assembly Lot Number
G
Gate location
Line 3: 3 Character Prefix, 5 Digit Part Number,
Package Variant
Line 4: 4 digit Date Code
Figure 8: Package SN, 3-Pin SIP
12
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
Vibration-Tolerant Hall Effect
Transmission Speed and Direction Gear Tooth Sensor IC
ATS19520
Revision History
Number
Date
Description
–
1
2
January 31, 2019
March 29, 2019
April 5, 2019
Initial release
Updated Features and Benefits (page 1), selection guide (page 2), and ASIL Protocol section (page 10).
Updated ASIL status (page 1) and figure references (page 4).
Copyright 2019, 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
13
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
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