Datasheet > ADCMP343ARJ

ADCMP343ARJ

更新时间： 2024-11-27 04:04:31

品牌	Logo	应用领域
亚德诺 - ADI		比较器
页数	文件大小	规格书
13页	149K
描述
Dual Comparators with 400mV Reference and programmable Hysteresis

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中文翻译

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ADCMP343ARJ 数据手册

Dual Comparators with 400mV Reference

and programmable Hysteresis

Preliminary Technical Data

ADCMP341/ADCMP343

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Low Quiescent Current: 6.5µA Typ

Supply Range: 1.7V to 5.5V

400mV Reference 0.8ꢀ Accuracy Over Temperature

Input Range Includes Ground

VINA

ADCMP341

INA_U

INA_L

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:

OUTA

400mV

ADCMP341 noninverting

ADCMP343 inverting

VINB

Small SOT-23 Package

OUTB

INB_U

INB_L

APPLICATIONS

Battery-Powered System Monitoring

Threshold Detectors

Relay Driving

Optoisolator Driving

Handheld Instruments

GND

VINA

GENERAL DESCRIPTION

ADCMP343

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.

INA_U

INA_L

OUTA

400mV

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.

VINB

OUTB

INB_U

INB_L

GND

Figure 1

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.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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