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Dual 0.275% Comparators and Reference
with Programmable Hysteresis
Data Sheet
ADCMP341/ADCMP343
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
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 ©20072013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
400 mV ± 0.275% threshold
User programmable hysteresis via resistor string
Supply range: 1.7 V to 5.5 V
Low quiescent current: 6.5 µA typical
Input range includes ground
Low input bias current: ±5 nA maximum
Open-drain outputs
Supports wired-AND connections
Input polarities:
ADCMP341 noninverting
ADCMP343 inverting
Small SOT-23 package
APPLICATIONS
Portable applications
Li-Ion monitoring
Handheld instruments
LED/relay driving
Optoisolator driving
Control systems
GENERAL DESCRIPTION
The ADCMP341/ADCMP343 consist of two low power, high
accuracy comparators with a 400 mV reference in an 8-lead
SOT-23 package. Operating within a supply range of 1.7 V to
5.5 V, the devices only draw 6.5 µA (typical), making them ideal
for low voltage system monitoring and portable applications.
Hysteresis is determined using three resistors in a string configura-
tion with the upper and lower tap points connected to the
±INA_U and ±INA_L pins of each comparator, respectively.
The state of the outputs of the comparators selects which pin is
internally connected to the comparators input. Therefore, a
change of state in the comparators output results in one of the
inputs being switched in to the comparator and the other being
switched out. This provides the user with a fully flexible and
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.
The comparator outputs are open-drain with the output stage
sinking capability guaranteed greater than 5 mA over temperature.
The ADCMP341 has noninverting inputs and the ADCMP343
has inverting inputs. The devices are suitable for portable,
commercial, industrial, and automotive applications.
FUNCTIONAL BLOCK DIAGRAMS
+INA_U
+INB_U
OUTA
MUXMUX
OUTB
V
DD
GND
400mV
ADCMP341
+INA_L
+INB_L
VINB
VINA
R1
R2
R3
06500-001
Figure 1. ADCMP341
–INA_U
–INB_U
OUTA
MUX
MUX
OUTB
V
DD
GND
400mV
ADCMP343
–INA_L
–INB_L
VINB
VINA
06500-002
R1
R2
R3
Figure 2. ADCMP343
CH1 2.00V
CH2 500mV
2
1
06500-029
OUTA
V
IN
R1 = 22kΩ
R2 = 2.2kΩ
R3 = 6.2kΩ
M100ms
Figure 3. Hysteresis programmed to 513 mV @ V
IN
on ADCMP341
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Résumé du contenu

Page 1 - 06500-029

Dual 0.275% Comparators and Reference with Programmable Hysteresis Data Sheet ADCMP341/ADCMP343 Rev. A Document Feedback Information furnished b

Page 2 - TABLE OF CONTENTS

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 10 of 12 APPLICATION INFORMATION The ADCMP341/ADCMP343 are dual, low power comparators with a built-in 40

Page 3 - SPECIFICATIONS

Data Sheet ADCMP341/ADCMP343 Rev. A | Page 11 of 12 OUTLINE DIMENSIONS COMPLIANT TO JEDEC STANDARDS MO-178-BA8°4°0°SEATINGPLANE1.95BSC0.65 BSC0.60BSC

Page 4 - ADCMP341/ADCMP343 Data Sheet

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 12 of 12 NOTES ©2007–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered tradema

Page 5 - ADCMP343

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 2 of 12 TABLE OF CONTENTS Features ...

Page 6

Data Sheet ADCMP341/ADCMP343 Rev. A | Page 3 of 12 SPECIFICATIONS VDD = 1.7 V to 5.5 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted. Table 1. Param

Page 7

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 4 of 12 ABSOLUTE MAXIMUM RATINGSTable 2. Parameter Rating VDD −0.3 V to +6 V ±INA_U, ±INA_L, ±INB_U, ±INB

Page 8

Data Sheet ADCMP341/ADCMP343 Rev. A | Page 5 of 12 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 1OUTA8OUTB2+INA_U7VDD3+INA_L6+INB_U4GND5+INB_LADCMP3

Page 9

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 6 of 12 TYPICAL PERFORMANCE CHARACTERISTICS 01020304050PERCENT OF UNITS (%)RISING INPUT THRESHOLD VOLTAGE

Page 10 - APPLICATION INFORMATION

Data Sheet ADCMP341/ADCMP343 Rev. A | Page 7 of 12 1SUPPLY CURRENT (µA)OUTPUT SINK CURRENT (mA)1000100100.001 1001010.10.01TA = –40°CVDD = 5.0VVDD =

Page 11 - OUTLINE DIMENSIONS

ADCMP341/ADCMP343 Data Sheet Rev. A | Page 8 of 12 1OUTPUT SATURATION VOLTAGE (mV)OUTPUT SINK CURRENT (mA)100100.001 0.10.011000101VDD = 5.0VVDD = 3.

Page 12 - Rev. A

Data Sheet ADCMP341/ADCMP343 Rev. A | Page 9 of 12 0PROPAGATION DELAY (µs)INPUT OVERDRIVE (mV)0 20406060504030201080 10006500-023LH NON INVLH INVHL N

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