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ADCMP370AKS-REEL7-ADCMP371AKS-REEL7
General Purpose Comparator w/an Open
General-Purpose ComparatorsRev. 0
FEATURES
2.25 V to 5.5 V operating voltage range
Low power consumption (4 µA)
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 package
APPLICATIONS
Voltage detectors
Battery management systems
A/D converters
Low voltage applications
Battery-powered electronics
Portable equipment
GENERAL DESCRIPTION The ADCMP370/ADCMP371 are general-purpose comparators
with input offset voltages of 9 mV (max) 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.
They are available in space-efficient 5-lead SC70 packaging.
FUNCTIONAL BLOCK DIAGRAMS
GND
OUT
VCC
IN+
IN–Figure 1.
GND
OUT
VCC
IN+
IN–Figure 2.
TABLE OF CONTENTSSpecifications.....................................................................................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
10/04—Revision 0: Initial Version
SPECIFICATIONSVCC = Full Operating Range, TA = −40°C to +85°C, unless otherwise noted.
Table 1.
ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted.
Table 2. Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only and 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 ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
IN+IN–OUT
VCC
GND
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions TYPICAL PERFORMANCE CHARACTERISTICS
CM I/P (V)
OFFSET (3.54.02.53.00.5
Figure 4. Input Offset vs. Common-Mode Input Voltage
INPUT OVERDRIVE (mV)
AGATION DE
LAYFigure 5. Propagation Delay vs. Input Overdrive (Low to High)
2030405060708090100110120130
INPUT OVERDRIVE (mV)
AGATION DE
LAYFigure 6. Propagation Delay vs. Input Overdrive (High to Low)
TEMPERATURE (°C)
AGATION DE
LAY04745-0-013
Figure 7. Propagation Delay vs. Temperature
SUPPLY VOLTAGE (V) CURRE
NT (
4326Figure 8. Supply Current vs. Supply Voltage (Output Low)
SUPPLY VOLTAGE (V)
CURRE
NT (0.5
Figure 9. Supply Current vs. Supply Voltage (Output High)
