OV Monitor. ADCMP671 Datasheet

ADCMP671 Monitor. Datasheet pdf. Equivalent

ADCMP671 Datasheet
Recommendation ADCMP671 Datasheet
Part ADCMP671
Description Adjustable UV and OV Monitor
Feature ADCMP671; Data Sheet Low Power, Adjustable UV and OV Monitor with 400 mV, ±0.275% Reference ADCMP671 FEATURE.
Manufacture Analog Devices
Datasheet
Download ADCMP671 Datasheet




Analog Devices ADCMP671
Data Sheet
Low Power, Adjustable UV and OV Monitor
with 400 mV, ±0.275% Reference
ADCMP671
FEATURES
Window monitoring with minimum processor I/O
Individually monitoring N rails with only N + 1 processor I/O
400 mV, ± 0.275% threshold at VDD = 3.3 V, 25°C
Supply range: 1.7 V to 5.5 V
Low quiescent current: 17 μA maximum at 125°C
Input range includes ground
Internal hysteresis: 9.2 mV typical
Low input bias current: 2.5 nA maximum
Open-drain outputs
Power good indication output
Designated over voltage indication output
Low profile (1 mm), 6-lead TSOT package
FUNCTIONAL BLOCK DIAGRAM
VDD
INH
UV
ADCMP671
PWRGD
400mV
OV
INL
OV
GND
Figure 1.
APPLICATIONS
Supply voltage monitoring
Li-Ion monitoring
Portable applications
Handheld instruments
GENERAL DESCRIPTION
The ADCMP671 voltage monitor consists of two low power, high
accuracy comparators and reference circuits. It operates on a
supply voltage from 1.7 V to 5.5 V and draws 17 μA maximum,
making it suitable for low power system monitoring and portable
applications. The part is designed to monitor and report supply
undervoltage and overvoltage fault. The low input bias current
and voltage reference allows resistor adjustable UV and OV
threshold down to 400 mV. The ADCMP671 has two open-
drain outputs: the PWRGD output indicates that the supply is
within the UV and OV window, and the OV output indicates
that the supply is overvoltage. This output combination allows
users to window monitor N supplies with an N + 1 processor
input/output (I/O). Each output is guaranteed to sink greater
than 5 mA over temperature.
The ADCMP671 is available in 6-lead TSOT package. The
device operates over the −40°C to +125°C temperature range.
404
INH1
402 INL1
INH2
INL2
400
398 RISING INPUT
396
394
392 FALLING INPUT
390
388
TWO TYPICAL PARTS
COMPARATOR A AND COMPARATOR B
386 VDD = 5V
–40 –20 0
20 40 60 80
TEMPERATURE (°C)
100 120
Figure 2. Comparator Thresholds vs. Temperature
Rev. 0
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Tel: 781.329.4700
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Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.



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DOCUMENTATION
Data Sheet
ADCMP671: Low Power, Adjustable UV and OV Monitor
with 400 mV, ±0.275% Reference
DESIGN RESOURCES
ADCMP671 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
DISCUSSIONS
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Analog Devices ADCMP671
ADCMP671
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
Functional Block Diagram .............................................................. 1 
General Description ......................................................................... 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 3 
Absolute Maximum Ratings............................................................ 7 
Thermal Resistance ...................................................................... 7 
ESD Caution.................................................................................. 7 
Pin Configuration and Function Descriptions............................. 8 
REVISION HISTORY
11/11—Revision 0: Initial Version
Data Sheet
Typical Performance Characteristics ..............................................9 
Applications Information .............................................................. 14 
Comparators and Internal Reference ...................................... 14 
Power Supply............................................................................... 14 
Inputs ........................................................................................... 14 
Hysteresis..................................................................................... 14 
Voltage Monitoring Scheme ..................................................... 14 
Outputs ........................................................................................ 15 
Outline Dimensions ....................................................................... 16 
Ordering Guide .......................................................................... 16 
Rev. 0 | Page 2 of 16







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