Datasheet > A3230_06

A3230_06

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
12页	362K
描述
Chopper-Stabilized Hall-Effect Bipolar Switch

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A3230_06 数据手册

A3230

Chopper-Stabilized Hall-Effect Bipolar Switch

Features and Benefits

▪ Chopper stabilization

Description

The A3230 Hall-effect sensor is a temperature stable, stress-

▫ Superior temperature stability

▫ Extremely low switchpoint drift

▫ Insensitive to physical stress

▪ Reverse battery protection

▪ Output short circuit protection

▪ Solid state reliability

▪ Small size

▪ Robust EMC capability

▪ High ESD ratings (HBM)

resistant bipolar switch. This sensor is the most sensitive

Hall-effect device in the Allegro^®bipolar switch family and

isintendedforring-magnetsensing.Superiorhigh-temperature

performance is made possible through an Allegro patented

dynamicoffsetcancellationthatutilizeschopper-stabilization.

This method reduces the offset voltage normally caused by

device overmolding, temperature dependencies, and thermal

stress.

The A3230 includes the following on a single silicon chip:

a voltage regulator, Hall-voltage generator, small-signal

amplifier, chopper stabilization, Schmitt trigger, and a short

circuit protected open-drain output. Advanced BiCMOS

wafer fabrication processing takes advantage of low-voltage

requirements, component matching, very low input-offset

errors, and small component geometries.

Packages: 3 pin SOT23W (suffix LH), and

3 pin SIP (suffix UA)

The A3230 Hall-effect bipolar switch turns on in a south

polarity magnetic field of sufficient strength and switches

off in a north polarity magnetic field of sufficient strength.

Because the output state is not defined if the magnetic field is

Continued on the next page…

Not to scale

Functional Block Diagram

VCC

Regulator

To All Subcircuits

VOUT

Amp

Control

Current Limit

<1Ω

GND

3230-DS, Rev. 2

12 3 4 5 6 7...12

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