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ADCMP341 Datasheet

(ADCMP341 / ADCMP343) Dual Comparators

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ADCMP341 pdf
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Dual Comparators with 400mV Reference
and programmable Hysteresis
Preliminary Technical Data
ADCMP341/ADCMP343
FEATURES
Low Quiescent Current: 6.5µA Typ
Supply Range: 1.7V to 5.5V
400mV Reference ±0.8% Accuracy Over Temperature
Input Range Includes Ground
User programmable Hysteresis via resistor string
Low Input Bias Current: ±10nA Max
Open drain outputs with 40mA Typical Sink Current
Supports Wired-AND Connections
Input Polarities:
ADCMP341 noninverting
ADCMP343 inverting
Small SOT-23 Package
APPLICATIONS
Battery-Powered System Monitoring
Threshold Detectors
Relay Driving
Optoisolator Driving
Handheld Instruments
GENERAL DESCRIPTION
The ADCMP341/ADCMP343 combine two low power, low
voltage comparators with a 400mV reference in the 5-lead
SOT-23 package. Operating within a supply range of 1.7V to
5.5V, the devices only draw 6.5µA typical, making them ideal
for low voltage system monitoring and portable applications.
Hysteresis is determined using three resistors in a string
configuration with the upper and lower tap points connected to
the INA_U and INA_L pins of each comparator respectively.
The state of the comparators output internally selects which pin
is connected to the comparator inputs. So a change of state in
the comparator output will result in one of the inputs being
switched in to the comparator and the other being switched
out. This will provide the user with a fully flexible and simple
method of setting the hysteresis. Although there are two pins
available on each comparator, there is only actually one input
available externally at any one time, the other inputs are
connected internally to the reference.
The comparator outputs are open drain with the output stage
sinking capability guaranteed greater than 5mA over
temperature. The ADCMP341 have noninverting inputs and
the ADCMP343 have inverting inputs. Available in
commercial, industrial and automotive temperature ranges.
Rev. PrD
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
FUNCTIONAL BLOCK DIAGRAM
VINA
INA_U
INA_L
VS
ADCMP341
OUTA
VINB
400mV
INB_U
INB_L
OUTB
VINA
INA_U
INA_L
VINB
GND
VS
ADCMP343
OUTA
400mV
INB_U
INB_L
OUTB
GND
Figure 1
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
©2006 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

ADCMP341 Datasheet

(ADCMP341 / ADCMP343) Dual Comparators

No Preview Available !

ADCMP341 pdf
ADCMP341/ADCMP343
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Typical Performance Characteristics ............................................. 6
REVISION HISTORY
Preliminary Technical Data
Applications INFORMATION ..................................................... 11
Comparators and Internal reference........................................ 11
programming Hysteresis ........................................................... 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
Rev. PrD | Page 2 of 13


Part Number ADCMP341
Description (ADCMP341 / ADCMP343) Dual Comparators
Maker Analog Devices
Total Page 13 Pages
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