Dual Low Power 1.5% Comparator With 400 mV Reference ADCMP670 FEATURES FUNCTIONAL BLOCK DIAGRAM V DD 400 mV 1.5% threshold Supply range: 1.7 V to 5.5 V ADCMP670-1 Low quiescent current: 6.5 A typical +INA OUTA Input range includes ground Internal hysteresis: 8.9 mV typical 400mV Low input bias current: 10 nA maximum OUTB Open-drain outputs INB Supports wire-AND connections Input polarities: one inverting and one noninverting GND 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. 1B 2B 402 The internal 400 mV reference provides the ability to monitor 400 low voltage supplies. The device operates on a supply voltage RISING INPUT 398 from 1.7 V to 5.5 V and draws only 6.5 A typical, making it suitable for low power system monitoring and portable applica- 396 tions. Hysteresis is included in the comparators. The comparator 394 outputs are open-drain and the output can be pulled up to any FALLING INPUT 392 voltage up to 5.5 V. The output stage is guaranteed to sink greater than 5 mA over temperature. 390 TWO TYPICAL PARTS The ADCMP670 is currently available in one model, the 388 COMP A AND COMP B V = 5V ADCMP670-1. This model has one inverting input and one DD 386 40 20 0 20 40 60 80 100 120 noninverting input, making it suitable for use as a window TEMPERATURE (C) comparator. The device is suitable for portable, commercial, Figure 2. Comparator Thresholds vs. Temperature industrial, and automotive applications. 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 Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2007-2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. THRESHOLD VOLTAGE (mV) 06493-001 06493-002ADCMP670 TABLE OF CONTENTS Typical Performance Characteristics ..............................................8 Features .............................................................................................. 1 Application Information ................................................................ 13 Applications ....................................................................................... 1 Comparators and Internal Reference ...................................... 13 Functional Block Diagram .............................................................. 1 Power Supply ............................................................................... 13 General Description ......................................................................... 1 Inputs ........................................................................................... 13 Revision History ............................................................................... 2 Outputs ........................................................................................ 13 Specif icat ions ..................................................................................... 3 Adding Hysteresis....................................................................... 13 Absolute Maximum Ratings ............................................................ 6 Outline Dimensions ....................................................................... 14 Thermal Resistance ...................................................................... 6 Ordering Guide .......................................................................... 14 ESD Caution .................................................................................. 6 Pin Configuration and Function Descriptions ............................. 7 REVISION HISTORY 7/09Rev. 0 to Rev. A Changes to Figure 12 ........................................................................ 9 2/07Revision 0: Initial Version Rev. A Page 2 of 16