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ADCMP670 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADCMP670
Description  Dual Low Power 1.5% Comparator With 400 mV Reference
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
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ADCMP670 Datasheet(HTML) 1 Page - Analog Devices

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Dual Low Power 1.5% Comparator
With 400 mV Reference
ADCMP670
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.
FEATURES
400 mV ± 1.5% threshold
Supply range: 1.7 V to 5.5 V
Low quiescent current: 6.5 μA typical
Input range includes ground
Internal hysteresis: 8.9 mV typical
Low input bias current: ±10 nA maximum
Open-drain outputs
Supports wire-AND connections
Input polarities: one inverting and one noninverting
Low profile (1 mm) TSOT package
Drop-in replacement for the LT6700-1
APPLICATIONS
Li-Ion monitoring
Portable applications
Hand-held instruments
Window comparators
LED/relay driving
Optoisolator driving
Control systems
FUNCTIONAL BLOCK DIAGRAM
+INA
–INB
OUTA
OUTB
VDD
GND
400mV
ADCMP670-1
Figure 1.
GENERAL DESCRIPTION
The ADCMP670 consists of two low power, high accuracy,
comparator and reference circuits in a 6-lead TSOT 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 draws only 6.5 μA typical, making it
suitable for low power system monitoring and portable applica-
tions. Hysteresis is included in the comparators. The comparator
outputs are open-drain and the output can be pulled up to any
voltage up to 5.5 V. The output stage is guaranteed to sink
greater than 5 mA over temperature.
The ADCMP670 is currently available in one model, the
ADCMP670-1. This model has one inverting input and one
noninverting input, making it suitable for use as a window
comparator. The device is suitable for portable, commercial,
industrial, and automotive applications.
386
TEMPERATURE (°C)
–40
–20
0
20
40
60
80
100
120
404
402
400
398
396
394
392
390
388
RISING INPUT
FALLING INPUT
2B
2A
1B
1A
TWO TYPICAL PARTS
COMP A AND COMP B
VDD = 5V
Figure 2. Comparator Thresholds vs. Temperature


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