スイッチとラッチ
業界で最も幅広い磁気スイッチおよびラッチのポートフォリオ。
Allegroは、超低消費電力と高信頼性を実現するHall-effectおよびTMR技術を特長とする、包括的な磁気スイッチおよびラッチの製品群を提供しています。当社のポートフォリオには、1Dおよび2Dラッチ、連続時間型スイッチ、ならびに車載、産業、民生用アプリケーション向けに最適化されたソリューションが含まれます。優れた温度安定性と物理的ストレスへの耐性を備えたこれらのソリューションは、デジタル位置検出に高精度と高耐久性をもたらします。
Documentation & Resources
Blog
The Power of Precision: Revolutionizing Switches and Latches with TMR Technology
This blog explores the benefits of TMR technology for switches and latches, highlighting how it's transforming these essential components.
Application Note
Magnetic Switch and Latch Applications in White Goods
At the heart of many modern white goods lies sophisticated sensing technology, and Allegro MicroSystems stands as a leader in providing highly flexible, robust, and precise Hall effect switches and latches
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Switches vs. Latches: Understanding the Key Differences and Their Applications New
Discover how Hall-effect switches and latches, essential magnetic sensors, power smartphones, industrial equipment, automotive systems, and DC motors. Learn their differences and applications in this insightful blog post.
Application Note
Quadrature Error Calculation in 2D Mulitplexed Quadrature Sensors
AN296365: In the realm of advanced sensor design, particularly for two-dimensional (2D) and three-dimensional (3D) applications, multiplexed signal paths are frequently employed.