ADCMP361_15 Datasheet, PDF (1/12 Pages) Analog Devices – Comparator and Reference with Dual Polarity Outputs

Data Sheet
Single 0.275% Comparator and Reference
with Dual Polarity Outputs
ADCMP361
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
V_DD
ADCMP361
IN
OUT
400mV
OUT
GND
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.
R1
4.7MΩ
3V ⁺
Li-Ion
CELL
R2
1MΩ
C1
100nF
V_DD ADCMP361
IN
+
OUT
–
OUT
400mV
GND
R3
1MΩ
Figure 2. Typical Li-Ion Monitoring Application
DISCHARGING
V_BATT
2.280V
2.271V
CHARGING
V_OUT
Figure 3. Li-Ion Monitoring Waveforms
Rev. B
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