Datasheet ADCMP670 (Analog Devices)

Dual Low Power 1.5% Comparator With 400 mV Reference ADCMP670 FEATURES FUNCTIONAL BLOCK DIAGRAM V 400 mV ± 1.5% threshold DD Supply range: 1.7 V to 5.5 V ADCMP670-1 Low quiescent current: 6.5 μA typical +INA Input range includes ground OUTA Internal hysteresis: 8.9 mV typical 400mV Low input bias current: ±10 nA maximum OUTB Open-drain outputs –INB Supports wire-AND connections
1 00
Input polarities: one inverting and one noninverting
3-
GND
49 06
Low profile (1 mm) TSOT package
Figure 1.
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 GENERAL DESCRIPTION 404
The ADCMP670 consists of two low power, high accuracy,
1A 2A
comparator and reference circuits in a 6-lead TSOT package.
402 1B 2B
The internal 400 mV reference provides the ability to monitor
) V 400
low voltage supplies. The device operates on a supply voltage
(m E 398 RISING INPUT
from 1.7 V to 5.5 V and draws only 6.5 μA typical, making it
AG T
suitable for low power system monitoring and portable applica-
L 396 O
tions. Hysteresis is included in the comparators. The comparator
D V L 394
outputs are open-drain and the output can be pulled up to any
HO S 392 FALLING INPUT
voltage up to 5.5 V. The output stage is guaranteed to sink
HRE
greater than 5 mA over temperature.
T 390
The ADCMP670 is currently available in one model, the
TWO TYPICAL PARTS 388 COMP A AND COMP B
ADCMP670-1. This model has one inverting input and one
VDD = 5V 386–40 –20 0 20 40 60 80 100 120
noninverting input, making it suitable for use as a window 02 0 3-
TEMPERATURE (°C)
49 comparator. The device is suitable for portable, commercial, 06 industrial, and automotive applications. 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2007-2009 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS APPLICATION INFORMATION COMPARATORS AND INTERNAL REFERENCE POWER SUPPLY INPUTS OUTPUTS ADDING HYSTERESIS OUTLINE DIMENSIONS ORDERING GUIDE