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Single 0.275% Comparator and Reference
with Dual Polarity Outputs
ADCMP361
Rev. A
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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FEATURES
400 mV ± 0.275% threshold
Supply range: 1.7 V to 5.5 V
Low quiescent current: 6.5 µA typical
Input range includes ground
Internal hysteresis: 9.3 mV typical
Low input bias current: ±5 nA maximum
Dual open-drain outputs
Small SOT-23 package
Qualified for automotive applications
APPLICATIONS
Li-Ion monitoring
Threshold detectors
Relay driving
Optoisolator driving
Industrial control systems
Handheld instruments
FUNCTIONAL BLOCK DIAGRAM
IN
OUT
OUT
V
DD
GND
400mV
ADCMP361
06496-001
Figure 1.
GENERAL DESCRIPTION
The ADCMP361 is a single low power, high accuracy compara-
tor with a 400 mV reference in a 5-lead SOT-23 package. The
internal 400 mV reference provides the ability to monitor low
voltage supplies. The device operates on a supply voltage from
1.7 V to 5.5 V and only draws 6.5 µA typical, making it suitable
for low power system monitoring and portable applications.
Hysteresis is included in the comparators.
There are dual open-drain outputs to enable the comparator
and reference circuit to be used in an inverting or noninverting
configuration. The outputs can be pulled to any voltage up to a
maximum of 5.5 V. The output stage is guaranteed to sink greater
than 5 mA over temperature
The device is suitable for portable, commercial, industrial, and
automotive applications.
IN
OUT
ADCMP361
GND
OUT
R1
4.7MΩ
R2
1MΩ
R3
1MΩ
+
+
–
V
DD
3V
Li-Ion
CELL
C1
100nF
06496-029
400mV
Figure 2. Typical Li-Ion Monitoring Application
2.280V
2.271V
CHARGING
DISCHARGING
V
BATT
V
OUT
06496-030
Figure 3. Li-Ion Monitoring Waveforms
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