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Two-Wire Hall-Effect Switches

OEMs and tier one providers choose from our broad portfolio of two-wire sensors for applications like seat belt buckles, seat track and occupant sensor. 

You can trust our safety and performance, too. Allegro Hall switches offer ISO 26262 compliance for automotive safety systems, industry-leading ESD and EMC performance, as well as 4× chopper stabilization for superior temperature stability and resistance to physical stress.
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Solutions using temperature switches, Hall-effect switches, and magnetic sensor IC switches

Selection & Solution Guides

Allegro Product Selection Guide (PDF)

Documentation & Resources

Application Note

Two-and-Three-Wire-Sensor-Interfaces

AN296233 - Electrical interfaces for active sensor integrated circuits (ICs) include both two-wire and three-wire interfaces. These two technology styles are named for the number of required connections needed to communicate the sensor output. This application note discusses use and tradeoffs of ...

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Application Note

Digital Position Sensor ICs—Continuous-Time to Chopper-Stabilized Cross-Reference Guide 

This application guide will outline the differences between the two sensor types and provide system designers with the tools needed in order to select the appropriate sensor for their system.

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Application Note

Latching Switch Hall-Effect IC Basics

There are four general categories of Hall-effect IC devices that provide a digital output: unipolar switches, bipolar switches, omnipolar switches, and latches. Latching Hall-effect sensor ICs, often referred to as "latches," are digital output Hall-effect switches that latch output states.

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Application Note

Vehicle Safety Systems

Occupant safety is one of the most critical elements of the automobile design. As a result, safety systems continue to become more sophisticated in order to limit, and ultimately prevent, personal injury in the case of an accident.

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Guide

APS11900 Programming Guide

This document describes two approaches to programming the APS11900 and should be used as a companion to the product datasheet.

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