Data Sheet
FEATURES
2.25 V to 5.5 V operating voltage range
Low power consumption (4 µA)
High voltage (22 V) tolerance on inputs
Output stages
ADCMP370:
open-drain, high voltage (22 V tolerance)
ADCMP371:
push-pull
50 nA input bias current
150 nA input offset current
9 mV input offset voltage
Rail-to-rail, common-mode input range
Specified over –40°C to +85°C temperature range
5-lead SC70 packaging
General-Purpose Comparators
ADCMP370/ADCMP371
FUNCTIONAL BLOCK DIAGRAMS
V
CC
ADCMP370
IN+
OUT
IN–
04745-001
GND
Figure 1.
APPLICATIONS
Voltage detectors
Battery management systems
Analog-to-digital converters
Low voltage applications
Battery-powered electronics
Portable equipment
V
CC
ADCMP371
IN+
OUT
GENERAL DESCRIPTION
The
ADCMP370/ADCMP371
are general-purpose comparators
with input offset voltages of 9 mV (maximum) and low power
consumption, which make them ideal for battery-powered,
portable equipment.
The
ADCMP371
has a push-pull output stage, while the
ADCMP370
has an open-drain output. The inputs on both
parts and the output on the
ADCMP370
can tolerate voltages
up to 22 V, making them suitable for use as voltage detectors in
portable equipment.
The devices are available in space-efficient, 5-lead SC70
packaging.
IN–
04745-002
GND
Figure 2.
Rev. D
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ADCMP370/ADCMP371
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams ............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution .................................................................................. 4
Pin Configuration and Function Descriptions..............................5
Typical Performance Characteristics ..............................................6
Applications........................................................................................9
Basic Comparator ..........................................................................9
Adding Hysteresis..........................................................................9
Outline Dimensions ....................................................................... 11
Ordering Guide .......................................................................... 11
REVISION HISTORY
6/14—Rev. C to Rev. D
Change to Adding Hysteresis Section .......................................... 10
8/13—Rev. B to Rev. C
Changes to V
IN_HI
and V
IN_LO
Equations ......................................... 9
3/11—Rev. A to Rev. B
Changes to Figure 19 Caption......................................................... 9
Changes to Adding Hysteresis Section .......................................... 9
Added Figure 21 and Figure 22, Renumbered Sequentially ..... 10
Updated Outline Dimensions ....................................................... 11
1/06—Rev. 0 to Rev. A
Changes to Features.......................................................................... 1
Changes to Figure 19 ........................................................................ 9
Changes to Figure 20 Caption....................................................... 10
Updated Outline Dimensions ....................................................... 11
10/04—Revision 0: Initial Version
Rev. D | Page 2 of 12
Data Sheet
SPECIFICATIONS
V
CC
= full operating range, T
A
= −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
SUPPLY
V
CC
Operating Voltage Range
Supply Current
COMMON-MODE INPUT RANGE
INPUT OFFSET VOLTAGE
INPUT OFFSET VOLTAGE AVERAGE DRIFT
INPUT BIAS CURRENT
INPUT OFFSET CURRENT
OUT VOLTAGE LOW
OUT VOLTAGE HIGH (ADCMP371)
OUT LEAKAGE CURRENT (ADCMP370)
Output Rise Time
Output Fall Time
TIMING
Propagation Delay
Min
2.25
4
0
5
50
150
0.4
0.8 V
CC
1
30
45
5
2
Typ
Max
5.5
7
V
CC
9
Unit
V
µA
V
mV
µV/°C
nA
nA
V
V
µA
ns
ns
µs
µs
ADCMP370/ADCMP371
Test Conditions/Comments
V
IN
= V
CC
/2
V
CM
= 0 V
V
IN
= V
CC
/2
V
IN
= V
CC
/2
IN+ < IN−, I
SINK
= 1.2 mA
IN+ > IN−, I
SOURCE
= 500 µA
IN+ > IN−, OUT = 22 V
C
OUT
= 15 pF
C
OUT
= 15 pF
Input overdrive = 10 mV
Input overdrive = 100 mV
Rev. D | Page 3 of 12
ADCMP370/ADCMP371
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter
V
CC
IN+, IN−
OUT (ADCMP370)
OUT (ADCMP371)
Operating Temperature Range
Storage Temperature Range
θ
JA
Thermal Impedance, SC70
Lead Temperature
Soldering (10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3
V to +6 V
−0.3
V to +25 V
−0.3
V to +25 V
−0.3
V to V
CC
+ 0.3 V
−40°C
to +85°C
−65°C
to +150°C
146°C/W
300°C
215°C
220°C
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. D | Page 4 of 12
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
IN+
1
2
5
V
CC
ADCMP370/ADCMP371
GND
ADCMP370/
ADCMP371
4
OUT
04745-003
IN–
3
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
1
2
3
4
5
Mnemonic
IN+
GND
IN–
OUT
V
CC
Description
Noninverting Input.
Ground.
Inverting Input.
Comparator Output. Open drain for
ADCMP370.
Push-pull for
ADCMP371.
Power Supply.
Rev. D | Page 5 of 12
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