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A1143 Datasheet Sensitive Two-wire Chopper-stabilized Unipolar Hall Effect Switches

Manufacturer: Allegro MicroSystems

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

This datasheet includes multiple variants, all published together in a single manufacturer document.

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

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).

A1143 Distributor

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