A3245_06 Datasheet

IC型號(hào)：
A3245_06
PDF描述：
Chopper-Stabilized Omnipolar Hall-Effect Switches
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367.49KB
PDF頁(yè)數(shù)：
12頁(yè)
芯片廠家：
ALLEGRO

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A3245

Chopper-Stabilized Omnipolar Hall-Effect Switches

Features and Benefits

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Omnipolar operation

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Chopper stabilization

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Superior temperature stability

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Extremely low switchpoint drift

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Insensitive to physical stress

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Reverse battery protection

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Output short circuit protection

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Solid state reliability

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Small size

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Robust EMC capability

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High ESD ratings (HBM)

Description

The A3245 integrated circuit is an omnipolar, ultrasensitive

Hall-effect switch with a digital output. This sensor has an

integrated regulator permitting operation to 24 V, making it

the first omnipolar switch available for operation to 24 V.

This device is especially suited for operation over extended

temperature ranges, up to +150擄C. Superior high-temperature

performance is made possible through an Allegro

廬

patented

dynamic offset cancellation, which reduces the residual offset

voltage normally caused by device overmolding, temperature

excursions, and thermal stress.

The A3245 Hall-effect switch includes the following on a single

silicon chip: 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 is used to take advantage of low-

voltage requirements, component matching, very low input-

offset errors, and small component geometries.

The omnipolar operation of the A3245 allows activation with

either a north

a south polarity field of sufficient strength. In

the absence of a magnetic field, the output is off. This patented

Packages: 3 pin SOT23W (suffix LH), and

3 pin SIP (suffix UA)

Continued on the next page鈥?/div>

Not to scale

Functional Block Diagram

VCC

Regulator

To All Subcircuits

Sample and Hold

Dynamic Offset

Cancellation

Low-Pass

Filter

VOUT

Amp

Control

Current Limit

<1惟

GND

A3245-DS, Rev. 2

型號(hào)

版本

描述

廠商

下載
A3240

英文版

CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

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CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

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Chopper-Stabilized Omnipolar Hall-Effect Switches

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英文版

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CHOPPER-STABILIZED.PRECISION HALL-EFFECT SWITCH

ETC

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A3240EU

英文版

CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

A3240EU
A3240EU

英文版

CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

ALLEGRO [A...

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A3240LH

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CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

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CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

ALLEGRO [A...

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A3240LT

英文版

CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

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CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

ALLEGRO [A...

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A3240UA

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英文版

CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH

ALLEGRO [A...

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英文版

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A3245_06 Datasheet

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