A3291

更新时间： 2024-11-15 03:16:31

品牌	Logo	应用领域
急速微 - ALLEGRO		锁存器
页数	文件大小	规格书
8页	245K
描述
Chopper Stabilized, Precision Hall Effect Latches for Consumer and Industrial Applications

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A3291 数据手册

A3290 and A3291

Chopper Stabilized, Precision Hall Effect Latches for

Consumer and Industrial Applications

Features and Benefits

Description

▪ Symmetrical switchpoints

▪ Resistant to physical stress

▪ Superior temperature stability

▪ Output short-circuit protection

▪ Operation from unregulated supply

▪ Reverse battery protection

▪ Solid-state reliability

The A3290 and A3291 Hall effect latches are extremely

temperature-stable and stress-resistant sensors, especially

suited for operation over extended temperature ranges (up

to 125°C). Superior high-temperature performance is made

possible through Dynamic Offset Cancellation, which reduces

the residual offset voltage normally caused by device package

overmolding,temperaturedependencies,andthermalstress.The

twodevicesareidenticalexceptfortheirmagneticswitchpoints.

They are not intended for automotive applications.

▪ Small package size

Bothdevicesinclude,onasinglesiliconchip,avoltageregulator,

a Hall-voltage generator, a small-signal amplifier, chopper

stabilization, a Schmitt trigger, and a short-circuit protected

open-collector output to sink up to 25 mA. A south polarity

magneticfieldofsufficientstrengthisrequiredtoturntheoutput

on. A north polarity field of sufficient strength is necessary to

turn the output off. An onboard regulator permits operation

with supply voltages in the range of 4.2 to 24 volts.

Packages: 3 pin SOT23W (suffix LH), and

3 pin SIP (suffix UA)

Twopackagestylesprovideamagneticallyoptimizedpackage

for most applications. Type LH is a miniature SOT23W low-

profile surface-mount package, and type UA is a three-pin

ultramini SIP for through-hole mounting. Both packages are

lead (Pb) free with 100% matte tin leadframe plating.

Not to scale

Functional Block Diagram

VCC

Regulator

OUT

Low-Pass

Filter

Amp

Control

Current Limit

GND

A3290-DS

12 3 4 5 6 7 8

中文翻译

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与A3291相关器件

型号	品牌	获取价格	描述	数据表
A3291KLHLT-T	ALLEGRO	获取价格	Chopper Stabilized, Precision Hall Effect Latches for Consumer and Industrial Applications
A3291KUA-T	ALLEGRO	获取价格	Chopper Stabilized, Precision Hall Effect Latches for Consumer and Industrial Applications
A3295	ALLEGRO	获取价格	Chopper Stabilized, Precision Hall Effect Switch
A3295_16	ALLEGRO	获取价格	Chopper Stabilized, Precision Hall Effect Switch for Consumer and Industrial Applications
A3295KLHLT-T	ALLEGRO	获取价格	Hall Effect Sensor, 0.5mT Min, 7.5mT Max, 30-60mA, Rectangular, Surface Mount, SOT-23W, 3
A3295KLHLX-T	ALLEGRO	获取价格	Hall Effect Sensor, 0.5mT Min, 7.5mT Max, 30-60mA, Rectangular, Surface Mount, SOT-23W, 3
A3295KUA-T	ALLEGRO	获取价格	Chopper Stabilized, Precision Hall Effect Switch for Consumer and Industrial Applications
A32-B0-24-620-421-C	Carling Technologies	获取价格	Magnetic Circuit Breaker,
A32BF150C0	SCHURTER	获取价格	Mains Power Connector, 10/15A, 125/250VAC, Male, Solder Terminal, ROHS COMPLIANT
A32BFC00C0	SCHURTER	获取价格	Mains Power Connector, 10/15A, 125/250VAC, Male, Solder Terminal, ROHS COMPLIANT

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