Dual 0.275% Comparators and Reference with Programmable Hysteresis Data Sheet ADCMP341/ADCMP343 FEATURES FUNCTIONAL BLOCK DIAGRAMS V DD 400 mV 0.275% threshold User programmable hysteresis via resistor string ADCMP341 VINA Supply range: 1.7 V to 5.5 V R1 +INA U Low quiescent current: 6.5 A typical R2 +INA L OUTA Input range includes ground Low input bias current: 5 nA maximum R3 400mV Open-drain outputs VINB Supports wired-AND connections OUTB Input polarities: +INB U ADCMP341 noninverting +INB L ADCMP343 inverting Small SOT-23 package GND APPLICATIONS Figure 1. ADCMP341 Portable applications V Li-Ion monitoring DD Handheld instruments ADCMP343 VINA LED/relay driving R1 Optoisolator driving INA U Control systems INA L OUTA R2 R3 GENERAL DESCRIPTION 400mV The ADCMP341/ADCMP343 consist of two low power, high VINB accuracy comparators with a 400 mV reference in an 8-lead OUTB INB U SOT-23 package. Operating within a supply range of 1.7 V to INB L 5.5 V, the devices only draw 6.5 A (typical), making them ideal for low voltage system monitoring and portable applications. Hysteresis is determined using three resistors in a string configura- GND tion with the upper and lower tap points connected to the Figure 2. ADCMP343 INA U and INA L pins of each comparator, respectively. The state of the outputs of the comparators selects which pin is R1 = 22k internally connected to the comparators input. Therefore, a R2 = 2.2k R3 = 6.2k change of state in the comparators output results in one of the inputs being switched in to the comparator and the other being OUTA switched out. This provides the user with a fully flexible and 1 accurate method of setting the hysteresis. One input of each comparator is internally connected to the reference. The other input is available externally, via an internal mux, through pins INA U or INA L. The state of the output determines which of these pins is connected at any one time. V IN 2 The comparator outputs are open-drain with the output stage sinking capability guaranteed greater than 5 mA over temperature. CH1 2.00V CH2 500mV M100ms The ADCMP341 has noninverting inputs and the ADCMP343 Figure 3. Hysteresis programmed to 513 mV VIN on ADCMP341 has inverting inputs. The devices are suitable for portable, commercial, industrial, and automotive applications. Rev. A Document Feedback 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 20072013 Analog Devices, Inc. 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Technical Support www.analog.com MUX MUX MUX MUX 06500-002 06500-001 06500-029ADCMP341/ADCMP343 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Application Information ................................................................ 10 General Description ......................................................................... 1 Comparators and Internal Reference ...................................... 10 Functional Block Diagrams ............................................................. 1 Power Supply ............................................................................... 10 Revision History ............................................................................... 2 Inputs ........................................................................................... 10 Specifications ..................................................................................... 3 Outputs ........................................................................................ 10 Absolute Maximum Ratings ............................................................ 4 Programming Hysteresis ........................................................... 10 Thermal Characteristics .............................................................. 4 Layout Recommendations ........................................................ 10 ESD Caution .................................................................................. 4 Outline Dimensions ....................................................................... 11 Pin Configurations and Function Descriptions ........................... 5 Ordering Guide .......................................................................... 11 REVISION HISTORY 8/13Rev. 0 to Rev. A Changes to Figure 8 .......................................................................... 6 Updated Outline Dimensions ....................................................... 11 2/07Revision 0: Initial Version Rev. A Page 2 of 12