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ADCMP670-1YUJZ-RL7 View Datasheet(PDF) - Analog Devices

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ADCMP670-1YUJZ-RL7 Datasheet PDF : 16 Pages
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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
Dual Low Power 1.5% Comparator
With 400 mV Reference
ADCMP670
FUNCTIONAL BLOCK DIAGRAM
VDD
ADCMP670-1
+INA
OUTA
400mV
–INB
OUTB
GND
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.
404
1A
2A
402
1B
2B
400
398
RISING INPUT
396
394
392
FALLING INPUT
390
388
TWO TYPICAL PARTS
COMP A AND COMP B
VDD = 5V
386
–40 –20 0
20 40 60 80
TEMPERATURE (°C)
100 120
Figure 2. Comparator Thresholds vs. Temperature
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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.
Trademarks and registered trademarks are the property of their respective owners.
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 ©2007-2009 Analog Devices, Inc. All rights reserved.
 

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