A1143 Datasheet Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches

Manufacturer: Allegro MicroSystems

Download the A1143 datasheet PDF. This datasheet also includes the A1140 variant, as both parts are published together in a single manufacturer document.

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A1143 sensitive two-wire chopper-stabilized unipolar hall effect switches by Allegro MicroSystems - Datasheet Preview — Note: The manufacturer provides a single datasheet file (A1140_AllegroMicroSystems.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	A1143
Manufacturer	Allegro MicroSystems
File Size	328.70 KB
Description	Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
Datasheet	A1143 Datasheet

General Description

TheA1140, A1142, andA1143 devices are sensitive, two-wire, unipolar, Hall effect switches that are factory-programmed at end-of-line to optimize magnetic switchpoint accuracy.

These devices use a high frequency chopper-stabilization technique, produced using the Allegro advanced BiCMOS wafer fabrication process, to achieve magnetic stability and to eliminate offset inherent in single-element devices exposed to harsh application environments.

Commonly found in a number of automotive

Overview

A1140, A1142, and A1143 Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect.

Key Features

Chopper stabilization ▫ Low switchpoint drift over operating temperature range ▫ Low sensitivity to stress.
Factory programmed at end-of-line for optimized switchpoints.
On-chip protection ▫ Supply transient protection ▫ Reverse-battery protection ▫ On-board voltage regulator ▫ 3.5 to 24 V operation Packages: 3 pin SOT23W (suffix LH), and 3 pin SIP (suffix UA).

More Datasheets from Allegro MicroSystems

Part Number	Description
A1141	Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1142	Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1120	Chopper-Stabilized Precision Hall-Effect Switches
A1121	Chopper-Stabilized Precision Hall-Effect Switches
A1122	Chopper-Stabilized Precision Hall-Effect Switches
A1123	Chopper-Stabilized Precision Hall-Effect Switches
A1125	Chopper-Stabilized Precision Hall-Effect Switches
A1126	Chopper-Stabilized Omnipolar Hall-Effect Switch
A1128	Highly Programmable Hall-Effect Switch
A1130	Two-Wire Unipolar Vertical Hall-Effect Switches