2

A1321-DS Rev. 3

Worcester, Massachusetts 01615-0036 (508) 853-5000

115 Northeast Cutoff, Box 15036

www.allegromicro.com

Allegro MicroSystems, Inc.

Ratiometric Linear Hall Effect Sensor for High-Temperature Operation

A1321/A1322/A1323

Functional Block Diagram

Amp

GND

VOUT

VCC

Out

Offset

Trim

Control

Gain

0.1 µF

V+

Terminal List

Symbol

Description

Number

Package LH Package UA

VCC

Connects power supply to chip

1

1

VOUT

Output from circuit

2

3

GND

Ground

3

2