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スイッチとラッチ

スイッチとラッチ

最適化されたモーター制御を可能にし、業界をリードするジッター パフォーマンスを実現する磁気ラッチ。モーターとエンコーダの機械的設計を革新する垂直ホール技術。最も苛酷な車載時過渡電圧下で動作を継続する能力。連続時間スイッチおよびラッチの業界内で最も広範なポートフォリオ。

こうした特徴は、Allegro をデジタル ポジション センサーの明確なリーダーに押し上げている理由の一部に過ぎません。

安全性をお求めですか?現在、当社のすべてのスイッチとラッチは、ISO 26262 標準に準拠して開発されています。

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Car driving on the highway

Hall-Effect Latches and Bipolar Switches

Our high-performance magnetic latches offer you industry-leading jitter performance, EMC/ESD robustness, and magnetic precision—all at competitive price points.

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Dual Hall-Effect Latches

Vertical Hall Technology by Allegro (VHT) sensing solutions revolutionize motors and encoders, delivering quadrature signals independent of magnet pitch or air gap.

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electric parking brake

Two-Wire Hall-Effect Switches

OEMs and tier one providers choose from our broad portfolio of Hall-effect switches for applications like seat belt buckles, seat track, shift selectors, door ajar, and so much more.

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Three-Wire Hall-Effect Switches

Perfect for sensing absolute position or proximity in harsh automotive environments, our three-wire switches are ideal for applications like shift selectors, door ajar, user interfaces and vane-interrupt systems.

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Red two-wheeler moped scooter

Micropower Hall-Effect Switches

Extend the life of your battery-powered devices with these integrated Hall-effect sensor ICs. These switches offer low power consumption and are ideal for use in on/off switching applications and for detection of tampering in utility meters.

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Close up of automotive gear shifter transmission

Special-Purpose Devices

Don't see the right solution? Take a look at products we've developed for very specific applications. We offer deep and broad applications expertise to help you find—or create—a device that fits your needs.

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Featured Products

UA-LH Package

APS12170

Voltage-Controlled Two-Wire Continuous-Time Hall-Effect Latch

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Product Image

A1260

Chopper-Stabilized Precision Vertical Hall-Effect Latch

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APS12450 Product Image

APS12450

Three-Wire Hall-Effect Latch with Advanced Diagnostics

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APS11500

Two-Wire Hall-Effect Switch

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Documentation & Resources

Application Note

General Applications Using The APS13568

AN296238 - In this applicate note, we discuss the use of the APS13568, an integrated circuit that combines an ultra-sensitive, omnipolar, micropower Hall-effect switch with a linear programmable current regulator which can provide up to 150 mA current to drive high brightness LEDs.

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Application Note

Smart Locks

New keyless, smart locks are emerging and replacing the traditional key deadbolt locks. With this new technology, the key is no longer used, and the deadbolt position is now controlled by the smart lock itself and not the user with their key.

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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

Programming a Back Biased Switch for Proximity Sensing

This application note assumes the user is programming an Allegro fully integrated back biased Hall effect switch or that the user has designed an appropriate magnetic circuit to accommodate the programming range of a programmable unipolar Hall effect switch.

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Application Note

Air-Gap-Independent Speed and Direction Sensing Using the Allegro A1262

The A1262 integrated circuit is an ultrasensitive dual-channel Hall-effect latch. As with conventional dual-channel latches, the quadrature outputs of the A1262 indicate rotation direction and position/speed of a rotating ring magnet target.

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Application Note

Improved Speed and Direction Sensing Using Vertical Hall Technology

The A1262 2D dual-channel Hall-effect sensor IC is offered in a 5-pin SOT23W surface-mount package, as well as a 4-pin SIP through-hole package. It features operation with traditional planar—as well as vertical—magnetic field direction.

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Application Note

Micro-Power Position Sensing in Cell Phone Applications

This note will show how to use the Allegro™ A1171 in a standard flip or slide phone, as well as techniques for sensing three positions using only one magnet and one Hall device in a multipurpose application.

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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

Introduction to Hall-Effect Switches and Conversion from Mechanical Switches

AN296192 - This application note will discuss the technical considerations necessary to aid with the replacement of an on/off mechanical switch with a Hall-effect switch.

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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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Application Note

TMR Digital Latches in Point-Level Liquid Sensors

Liquid-level sensors are used in a variety of applications in the industrial and consumer marketplace and play a vital role in providing the necessary data to the host system.

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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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Application Note

Unipolar 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.

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Application Note

Ring Magnet Speed Sensing for Electronic Power Steering

Proper control of Electric Power Steering (EPS) systems requires both speed and direction information from the steering input shaft. This control will typically come from both high-resolution speed information and fairly coarse position information.

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