ADM8641T263ACBZ-R7 [ADI]
Ultralow Power Voltage Detector;
| 型号： | ADM8641T263ACBZ-R7 |
| 厂家： | 
ADI |
| 描述： | Ultralow Power Voltage Detector |
| 文件： | 总11页 (文件大小：245K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultralow Power Voltage Detector
ADM8641/ADM8642
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
VCC
Ultralow power consumption with ICC = 92 nA (typical)
Precision, low voltage monitoring
ADM8641
Pretrimmed voltage monitoring threshold options
10 options from 2 V to 4.63 V for the ADM8641
20 options from 0.5 V to 1.9 V for the ADM8642
1.3ꢀ threshold accuracy over full temperature range
Output disable input
DIS
OUT
V
TH
23 μs to 26 μs typical propagation delay
Open-drain type output
GND
Power supply glitch immunity
Available in a 1.46 mm × 0.96 mm WLCSP
Operational temperature range: −40°C to +85°C
Figure 1. ADM8641 Functional Block Diagram
VCC
ADM8642
APPLICATIONS
Portable/battery-operated equipment
Microprocessor systems
Energy metering
DIS
VIN
OUT
V
TH
Energy harvesting
GND
Figure 2. ADM8642 Functional Block Diagram
GENERAL DESCRIPTION
The ADM8641 and ADM8642 are simple voltage detectors
suitable for use in general-purpose applications. The ultralow
power consumption of these devices makes them suitable for
power efficiency sensitive systems, such as battery-powered
portable devices and energy meters.
released for sale as standard models. See the Ordering Guide
section for full information.
The ADM8641 monitors the voltage using the VCC pin. The
separate supply pin on the ADM8642 allows it to have a lower
detection threshold down to 0.5 V.
The factory preset detection thresholds from 0.5 V to 4.63 V
with 1.2ꢀ accuracy over the full temperature range enable the
devices to monitor the node of interest accurately with direct
The ADM8641 and ADM8642 are available in a 6-ball, 1.46 mm ×
0.96 mm WLCSP. These devices are specified over the −40°C to
+85°C temperature range.
DIS
contact. The
input lets the user hold the output low
regardless of the state of the input. Not all device options are
Rev. D
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ADM8641/ADM8642
Data Sheet
TABLE OF CONTENTS
Features.............................................................................................. 1
Theory of Operation .........................................................................9
Voltage Monitoring Input ...........................................................9
VIN as an Adjustable Input.........................................................9
Transient Immunity .....................................................................9
Output.............................................................................................9
Disable Input .................................................................................9
Device Model Options................................................................... 10
Outline Dimensions....................................................................... 11
Ordering Guide .......................................................................... 11
Applications ...................................................................................... 1
Functional Block Diagrams............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications .................................................................................... 3
Absolute Maximum Ratings ........................................................... 5
Thermal Resistance...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions........................... 6
Typical Performance Characteristics............................................. 7
REVISION HISTORY
5/2021—Rev. C to Rev. D
1/2016—Rev. A to Rev. B
Added VCC Slew Rate Consideration Section............................. 9
Changes to Ordering Guide.......................................................... 11
1/2018—Rev. B to Rev. C
4/2015—Rev. 0 to Rev. A
Changes to Threshold Hysteresis Parameter, Table 1 .................3
Changes to General Description .................................................... 1
Added Note 1 to Table 1.................................................................. 3
Changed Out Output Parameter, Table 1 to Out Pin Output
1/2015—Revision 0: Initial Version
DIS
DIS
Parameter, Table 1,
Input Parameter, Table 1 to
Pin
Input Parameter, Table 1.................................................................. 4
Changed Device Options Section to Device Model Options
Section.............................................................................................. 10
Changes to Device Model Options Section ................................ 10
Changes to Ordering Guide.......................................................... 11
Rev. D | Page 2 of 11
Data Sheet
ADM8641/ADM8642
SPECIFICATIONS
VCC = 2 V to 5.5 V, VIN < VCC + 0.3 V, TA = −40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit Test Conditions/Comments
OPERATING VOLTAGE RANGE
ADM8641
ADM8642
VCC
0.9
2
0.9
5.5
5.5
V
V
V
Guarantees valid OUT output
Guarantees valid OUT output
Guarantees OUT low
UNDERVOLTAGE LOCKOUT
Input Voltage Rising
Input Voltage Falling
Hysteresis
ADM8642 only
UVLORISE
UVLOFALL 1.6
UVLOHYS
1.95
V
V
mV
90
92
INPUT CURRENT
VCC Quiescent Current
ICC
190
110
32
nA
nA
nA
nA
VCC = 2 V to 5.5 V, OUT pulled high
TA = 25°C, OUT pulled high
VIN = 2 V, VCC = 2 V
VIN Average Input Current
IVIN
VTH
4
4
8.5
VIN = 2 V, VCC = 5.5 V
THRESHOLD VOLTAGE1
ADM8641
ADM8642
Input falling
See Table 6
VTH − 1.3% VTH
VTH − 1.3% VTH
VTH − 1.4% 1.1
VTH + 1.3%
VTH + 1.3%
VTH + 1.4%
VTH + 1.6%
VTH + 1.6%
VTH + 1.7%
VTH + 1.8%
VTH + 1.8%
VTH + 1.9%
VTH + 1.9%
VTH + 2.0%
VTH + 2.1%
VTH + 2.1%
VTH + 2.2%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
See Table 7, VTH ≥ 1.2 V
1.1 V threshold option
1 V threshold option
0.95 V threshold option
0.9 V threshold option
0.85 V threshold option
0.8 V threshold option
0.75 V threshold option
0.7 V threshold option
0.65 V threshold option
0.6 V threshold option
0.55 V threshold option
0.5 V threshold option
VTH − 1.6%
1
VTH − 1.6% 0.95
VTH − 1.7% 0.9
VTH − 1.8% 0.85
VTH − 1.8% 0.8
VTH − 1.9% 0.75
VTH − 1.9% 0.7
VTH − 2.0% 0.65
VTH − 2.1% 0.6
VTH − 2.1% 0.55
VTH − 2.2% 0.5
THRESHOLD HYSTERESIS
ADM8641
VHYST
0.9% × VTH
V
ADM8642
0.9% × VTH
10.3
V
mV
VTH > 1 V
VTH ≤ 1 V
PROPAGATION DELAY
ADM8641 VCC to OUT
tPD_VCC
tPD_VIN
18
26
36
23
39.5
37
57
35
61
μs
μs
μs
μs
VCC falling with VTH × 10% overdrive
VCC rising with VTH × 10% overdrive
VIN falling with VTH × 10% overdrive
VIN rising with VTH × 10% overdrive
20.5
13.5
22
ADM8642 VIN to OUT
INPUT GLITCH REJECTION
ADM8641 VCC Glitch Rejection
tGR_VCC
tGR_VIN
23
35
21
38
μs
μs
μs
μs
VCC falling with VTH × 10% overdrive
VCC rising with VTH × 10% overdrive
VIN falling with VTH × 10% overdrive
VIN rising with VTH × 10% overdrive
ADM8642 VIN Glitch Rejection
Rev. D | Page 3 of 11
ADM8641/ADM8642
Data Sheet
Parameter
Symbol
Min
Typ
Max
Unit Test Conditions/Comments
OUT PIN OUTPUT
Output Voltage Low
VOUT_OL
0.4
0.4
0.4
0.4
5
V
V
V
V
VCC > 4.25 V, ISINK = 6.5 mA
VCC > 2.5 V, ISINK = 6 mA
VCC > 1.2 V, ISINK = 4.6 mA
VCC > 0.9 V, ISINK = 0.9 mA
VOUT = VCC = 5.5 V
Leakage Current
DIS PIN INPUT
VIL
nA
0.4
V
VIH
0.9
0.5
V
DIS Glitch Rejection
DIS to OUT Delay
DIS Pull-Up Resistance
0.4
μs
μs
MΩ
tD_DIS1
0.65
0.6
DIS falling
0.82
1 Not all device options are released for sale as standard models. See the Ordering Guide section for full information.
Rev. D | Page 4 of 11
Data Sheet
ADM8641/ADM8642
ABSOLUTE MAXIMUM RATINGS
THERMAL RESISTANCE
Table 2.
θJA is specified for a device soldered on an FR4 board with a
minimum footprint.
Parameter
Rating
VCC
OUT
VIN
DIS
−0.3 V to +6 V
−0.3 V to +6 V
−0.3 V to +6 V
−0.3 V to VCC + 0.3 V
10 mA
Table 3.
Package Type
θJA
Unit
6-Ball WLCSP
105.6
°C/W
Input/Output Current
Storage Temperature Range
Operating Temperature Range
−40°C to +150°C
−40°C to +85°C
ESD CAUTION
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the
operational section of this specification is not implied.
Operation beyond the maximum operating conditions for
extended periods may affect product reliability.
Rev. D | Page 5 of 11
ADM8641/ADM8642
Data Sheet
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
BALLA1
INDICATOR
1
2
VCC GND
A
B
C
GND
DNC
DIS OUT
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
DNC = DO NO CONNECT.
DO NOT CONNECT TO THIS PIN.
Figure 3. ADM8641 Pin Configuration
Table 4. ADM8641 Pin Function Descriptions
Pin No.
Mnemonic
Description
A1
VCC
Power Supply Input. The voltage on the VCC pin is monitored on the ADM8641. It is recommended to
place a 0.1 μF decoupling capacitor between the VCC pin and the GND pin.
A2
B1
B2
C1
C2
GND
DNC
GND
DIS
Ground. Both GND pins on the ADM8641 must be grounded.
Do Not Connect. Do not connect to this pin.
Ground. Both GND pins on the ADM8641 must be grounded.
Active Low Output Disable Input.
OUT
Open-Drain Detector Output.
BALLA1
INDICATOR
1
2
VCC GND
A
B
C
DIS GND
VIN OUT
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
Figure 4. ADM8642 Pin Configuration
Table 5. ADM8642 Pin Function Descriptions
Pin No.
Mnemonic
Description
A1
VCC
Power Supply Input. The voltage on the VCC pin is not monitored on the ADM8642. It is recommended to
place a 0.1 μF decoupling capacitor between the VCC pin and the GND pin.
A2
B1
B2
C1
GND
DIS
Ground. Both GND pins on the ADM8642 must be grounded.
Active Low Output Disable Input.
GND
VIN
Ground. Both GND pins on the ADM8642 must be grounded.
Low Voltage Monitoring Input. This separate supply input allows the ADM8642 to monitor low voltages
of 0.8 V on the VIN pin.
C2
OUT
Open-Drain Detector Output.
Rev. D | Page 6 of 11
Data Sheet
ADM8641/ADM8642
TYPICAL PERFORMANCE CHARACTERISTICS
120
8
7
I
I
I
, V = 0V
VIN CC
, V = 2V
VIN CC
115
110
105
100
95
, V = 2V
CC CC
6
5
4
3
90
2
85
1
80
0
75
–1
–2
70
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
(V)
TEMPERATURE ( °C)
V
IN
Figure 5. Supply Current (ICC) vs. Temperature
Figure 8. VIN Pin and VCC Pin Input Current vs. VIN
3.0
2.5
2.0
1.5
1.0
0.5
0
1.020
1.015
1.010
1.005
1.000
0.995
0.990
0.985
0.980
V
V
V
V
= 0.6V
= 2.0V
= 3.3V
= 4.7V
TH
TH
TH
TH
V
FALLING
CC
V
RISING
CC
0
0.5
1.0
1.5
2.0
2.5
–40
–20
0
20
40
60
80
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Figure 6. Supply Current (ICC) vs. Supply Voltage, VCC < 2 V
Figure 9. Normalized Falling Threshold vs. Temperature
120
110
100
90
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
R
R
= 10kΩ
PULLUP
PULLUP
= 100kΩ
80
70
60
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
0.5
1.0
1.5
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
VOLTAGE ON VCC (V)
Figure 7. Supply Current (ICC) vs. Supply Voltage
Figure 10. OUT Pin Voltage vs. Voltage on VCC
(with the OUT Pin Pulled up to the VCC Pin Through RPULLUP
)
Rev. D | Page 7 of 11
ADM8641/ADM8642
Data Sheet
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
450
400
350
300
250
200
150
100
50
V
V
FALLING
RISING
IN
IN
V
V
V
V
= 0.9V
= 1.2V
= 2.5V
= 4.25V
CC
CC
CC
CC
0
1
1
2
3
4
5
6
7
8
9
I
10 11 12 13 14 15 16 17 18 19 20
(mA)
10
INPUT OVERDRIVE (mV)
100
SINK
Figure 11. Maximum Transient Duration vs. Input Overdrive
Figure 14. OUT Low Level Output Voltage vs. Sink Current (ISINK
Figure 15. OUT Propagation Delay With VCC/VIN Rising
Figure 16. OUT Propagation Delay With VCC/VIN Falling
)
8
V
V
V
= 5.5V
= 3.3V
= 2V
CC
CC
CC
7
6
5
4
3
2
1
0
–40 –30 –20 –10
0
10 20 30 40 50 60 70 80
TEMPERATURE (°C)
Figure 12. VIN Pin Leakage Current vs. Temperature
0.30
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE (V)
Figure 13. Output Leakage Current vs. Output Voltage
Rev. D | Page 8 of 11
Data Sheet
ADM8641/ADM8642
THEORY OF OPERATION
3.3V
The ADM8641 and ADM8642 ultralow power voltage detectors
are especially suited for battery-powered applications due to the
190 nA quiescent current (maximum). The internal precision
reference allows the user to monitor specific voltage levels accur-
ately from 0.5 V to 4.63 V. These devices feature internal input
hysteresis and an open-drain output. The output remains logic
high after the monitored input is above the preset threshold. The
output changes to logic low after the input voltage falls below
the threshold. The devices keep the output in a logic low state
whenever the supply voltage on the VCC pin is below the
UVLO threshold. The output disable input can also keep the
output low regardless of the status on the input.
V
IO
VCC
VIN
OUT
INPUT
MICRO-
ADM8642
0.8V
PROCESSOR
DIS
GND
Figure 19. ADM8642 as an Adjustable Threshold Device
TRANSIENT IMMUNITY
To avoid unnecessary output state changes caused by fast
power supply transients, an input glitch filter is added to the
VCC pin of the ADM8641 and the VIN pin of the ADM8642 to
filter out the transient glitches on these pins.
3.3V
VCC
DIS
VIO
INPUT
Figure 11 shows the comparator overdrive (that is, the maximum
magnitude of positive and negative going pulses with respect to
the typical threshold) vs. the pulse duration without changing
the state of the output.
OUT
MICRO-
PROCESSOR
ADM8641
GND
OUTPUT
Figure 17. ADM8641 Typical Application Circuit
3.3V
Both the ADM8641 and ADM8642 voltage detectors have an
open-drain output. For the ADM8641, the state of the output is
guaranteed to be valid as soon as VCC rises above 0.9 V. For the
ADM8642, the output is guaranteed to be logic low from when
12V
V
IO
VCC
VIN
INPUT
OUT
ADM8642
MICRO-
PROCESSOR
VCC = 0.9 V to when the device exits ULVO.
DIS
GND
When the monitored voltage falls below its associated threshold,
the OUT pin asserts low after 23 μs to 26 μs (typical). When the
monitored voltage rises above the threshold plus hysteresis, the
OUT pin asserts high after 36 μs to 39.5 μs (typical).
Figure 18. ADM8642 Typical Application Circuit
VOLTAGE MONITORING INPUT
DISABLE INPUT
The VCC pin on the ADM8641 acts as both a device power
input node and a voltage monitoring input node. The ADM8642
uses separate pins for supply and voltage monitoring to achieve
a low voltage monitoring threshold to 0.5 V. It is recommended
to place a 0.1 μF decoupling capacitor between the VCC pin
and the GND pin.
DIS
The ADM8641/ADM8642 feature a disable input ( ). Drive the
DIS DIS
pin low to assert the output low. The
internal pull-up resistor so that the input is always high when
DIS
input has a 0.6 MΩ
unconnected. To drive the
input, use an external signal or
a push-button switch to ground; debounce circuitry is integrated
on-chip for this purpose. Noise immunity is provided on the
VCC Slew Rate Consideration
DIS
input, and fast, negative going transients of up to 0.4 μs
(typical) are ignored. If required, a 0.1 ꢁF capacitor between
A fast VCC ramp (μs range) on power-up can cause the device
to behave in an irregular manner. In applications where a high
slew rate on VCC is possible, for example, powering up using a
battery pack, it is recommended that an RC filter is used to
reduce the slew rate. RC combinations of 3.3 kΩ + 2.2 μF and
1 kΩ + 10 μF have been tested and identified as safe options.
DIS
the
pin and ground provides additional noise immunity.
tPD_VCC
tPD_VCC
V
V
+ V
TH
VCC
OUT
TH HYST
VIN AS AN ADJUSTABLE INPUT
Due to the low leakage nature of the VIN pin, the ADM8642 can
be used as a device with an adjustable threshold. Use an
external resistor divider circuit to program the desired voltage
monitoring threshold based on the VIN threshold, as shown in
Figure 19.
DIS EXTERNALLY
DRIVEN LOW
DIS
tD_DIS
tD_DIS
DIS
Figure 20.
Input Timing
Rev. D | Page 9 of 11
ADM8641/ADM8642
Data Sheet
DEVICE MODEL OPTIONS
The ADM8641/ADM8642 include many device options,
however, not all options are released for sale. Released options
are called standard models and are listed in the Ordering Guide
section. The Simple Reset Supervisory IC page also offers a list
of standard models. Contact a sales representative for information
on nonstandard models and be aware that samples and
production units have long lead times.
Table 6. ADM8641 VCC Threshold (VTH) Options (TA = −40°C to +85°C)
Threshold Number
Min
Typ
Max
Unit
V
V
V
V
V
V
V
V
200
220
232
263
280
293
300
308
440
463
1.974
2.171
2.290
2.596
2.764
2.892
2.961
3.040
4.343
4.570
2
2.2
2.026
2.229
2.350
2.664
2.836
2.968
3.039
3.120
4.457
4.690
2.32
2.63
2.8
2.93
3
3.08
4.4
4.63
V
V
Table 7. ADM8642 VIN Threshold (VTH) Options (TA = −40°C to +85°C)
Threshold Number
Min
Typ
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
Max
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
050
055
060
065
070
075
080
085
090
095
100
110
120
130
140
150
160
170
180
190
0.489
0.538
0.588
0.637
0.686
0.736
0.785
0.835
0.885
0.935
0.984
1.084
1.184
1.283
1.382
1.481
1.579
1.678
1.777
1.875
0.511
0.562
0.612
0.663
0.714
0.764
0.815
0.865
0.915
0.965
1.016
1.116
1.216
1.317
1.418
1.520
1.621
1.722
1.823
1.925
V
V
V
V
ADM864_ T_ _ _ACBZ-R7
GENERIC NUMBER
PACKING MATERIAL
(1 OR 2)
R7 = 7" TAPE AND REEL
(3000 PIECE QUANTITY)
THRESHOLD NUMBER
(050 TO 463)
Z = LEAD-FREE
PACKAGE DESIGNATION
CB: WLCSP
TEMPERATURE RANGE
A: –40°C TO +85°C
Figure 21. Ordering Code Structure
Rev. D | Page 10 of 11
Data Sheet
ADM8641/ADM8642
OUTLINE DIMENSIONS
1.000
0.960
0.920
BOTTOM VIEW
(BALL SIDE UP)
2
1
A
B
BALL A1
IDENTIFIER
1.500
1.460
1.420
1.00
REF
C
0.50
BSC
TOP VIEW
(BALL SIDE DOWN)
0.50 BSC
0.390
0.360
0.330
0.660
0.600
0.540
SIDE VIEW
COPLANARITY
0.04
0.360
0.320
0.280
0.270
0.240
0.210
SEATING
PLANE
Figure 22. 6-Ball Wafer Level Chip Scale Package [WLCSP]
(CB-6-17)
Dimensions shown in millimeters
ORDERING GUIDE
Model1, 2, 3
Temperature Range Threshold Voltage (V)
Package Description
6-Ball WLCSP
6-Ball WLCSP
Package Option Marking Code
ADM8641T263ACBZ-R7 −40°C to +85°C
ADM8642T100ACBZ-R7 −40°C to +85°C
ADM8641-EVALZ
2.63
1.0
CB-6-17
CB-6-17
DT
DU
Evaluation Board
Evaluation Board
ADM8642-EVALZ
1 Z = RoHS Compliant Part.
2 ADM8641/ADM8642 include many device options, however, not all options are released for sale. Released options are called standard models and are listed in the
Ordering Guide. The Simple Reset Supervisory IC page also offers a list of standard models. Contact a sales representative for information on nonstandard models and
be aware that samples and production units have long lead times.
3 If ordering nonstandard models, complete the ordering code shown in Figure 21 by inserting the model number and threshold number.
©2015–2021 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D12781-5/21(D)
Rev. D | Page 11 of 11
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