磁性速度传感器
磁性速度传感，专为精度、性能和安全而打造。
凭借数十年的算法积累和专有信号处理技术，确保振动、EMI 和气隙变化等严苛环境中的可靠运行。我们的产品组合提供 ASIL 就绪和 ASIL 合规选项，并支持多种接口，专为安全关键系统和新一代电动出行而打造。
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凸轮轴传感器 IC
Allegro 提供具有 EMC 保护和真实上电状态 (TPOS) 功能的全集成凸轮轴位置传感器。我们在各种安装气隙下的高精度 TPOS 性能可让发动机启动更快、运行更高效。
曲轴传感器 IC
Allegro 的高性能曲轴传感器提供卓越的边缘检测和灵活集成 — 专为两轮车辆设计，确保启停系统可靠运行。
通用速度传感器 IC
Allegro 的通用速度传感器将成熟可靠的车规级性能适配工业应用。凭借数十年的算法专长和系统级设计经验，我们的解决方案可在严苛环境中实现可靠的速度和方向检测
传感器接口 IC
Allegro 用于速度和压力传感器的接口 IC 可提供快速准确的输出，非常适合各种汽车和工业应用。Allegro 接口 IC 采用集成信号调节算法，可为对安全性要求极高的系统提供系统简化和高级诊断功能。
变速箱传感器 IC
我们的变速箱速度传感器采用先进的霍尔 (Hall) 和背偏置 GMR 技术，即使在严苛的工作条件下，也能提供卓越的抗振性能、宽气隙性能及稳定输出。凭借符合 ASIL 标准的产品以及集成的磁体和保护选项，我们正在为高燃油效率的安全关键型变速箱应用树立新标杆。
轮速传感器 IC
我们已获专利的业界领先 GMR 技术可在最宽的安装公差范围内提供低抖动和大气隙——它还提供高精度轮速和位置测量，是高级制动和自动驾驶汽车应用的理想选择。此外，我们还提供基于霍尔效应的速度传感器，可与铁磁和环形磁铁目标配合使用。
Documentation & Resources
Application Note
Transmission Gear Tooth Sensing
AN296221 - In this application note learn how our industry-leading, time-proven algorithms included on our transmission ICs have been designed to handle the most stringent application conditions.
Application Note
Benefits of Dynamic Threshold Feature in ATS16351, GMR Back-Biased Speed Sensor IC
AN296257 - The Allegro ATS16351PSM [1] is a True-Power-On-State (TPOS) sensor providing the speed and position of a rotational ferromagnetic target.
Application Note
Giant Magnetoresistance versus Hall-effect: A Comparison of Technologies for Speed Sensor Applications
Allegro MicroSystems giant magnetoresistance (GMR) effect technology offerings build on lessons learned from experience with Hall-effect devices to enable new options for speed sensing system design.
Application Note
Effect of Ring Magnet Dimensions on Differential Speed Sensor Performance
AN296251 - In this application note, we describe how ring magnet dimensions affect speed sensor performance is given.
Technical Article
The Future of Automotive Wheel Sensing with GMR
P0083 - With the rise of vehicle electrification, computerized control systems, and subsystem reliability monitoring, it has become essential for systems to have accurate rotational information for each wheel of the vehicle.
Application Note
Differential Hall-Effect Sensors: Safer and More Reliable for Two-Wheelers of the Future
AN296173 - The use of electronic controls for engine, transmission, and wheel speed in two- and three-wheeled vehicles is growing, particularly in developing nations. This trend is largely driven by mandates to improve air quality, fuel efficiency, and vehicle safety worldwide.
Application Note
Magnetic Encoder Design for Electrical Motor Driving a Dual-Channel Differential Magnetic Speed Sensor IC
This application note describes how to use a Hall sensor device such as the Allegro ATS605LSG as an encoder in a system with a ferrous target, and gives target design recommendations to achieve outputs in quadrature and a 50% duty cycle for each output.
Application Note
Target Design for Back Biased GMR Sensor IC ATS19580LSN
The ATS19580 employs GMR sensing technology in conjunction with SolidSpeed Digital architecture to transmit transmission gear sensing data to the system.
Application Note
Target Design for Back-Biased Hall Sensor IC ATS667LSG
In the following, the magnet designs are fixed by using an Allegro IC package with an integrated magnet.
Application Note
Method for Mechanical Mounting Tolerance Compensation on Allegro Speed Sensors
AN296175 - Accuracy requirements for absolute mechanical edge detection on cam sensors and more generally on engine management speed sensors have noticeably increased with the need for power optimization and emissions control in car engines being sold today.
Application Note
System-Level Application Considerations for Magnetic Speed Sensors
AN296266 - The use of a noncontact, active, speed sensor integrated circuit (IC) greatly simplifies system design-in of a magnetic speed sensor. Although these ICs are designed to operate under a wide variety of system factors, the cautious automotive designer must contemplate certain more-subtle system considerations.
Brochure
Brochure: State-Of-The-Art Back-Biased GMR Speed Sensing
Allegro pioneers the first back-biased GMR Sensor with 50% larger air gaps. This larger air gap operation enables smaller and lighter transmissions that achieve reduced fuel consumption to help meet today's fuel economy standards.
Application Note
Wheel Speed Sensors Operating in Harsh Environments
Wheel speed sensors (WSS) operate in harsh environments with limited shielding and temperature control. Allegro Microsystems has developed innovative algorithms and high-performance sensors to operate in these environments.
Application Note
A19520/ATS19520 Sensor IC Outputs Under Vibration Conditions
AN296232 - This application note details the Allegro A19520 and ATS19520 sensor IC outputs for general target and sensor vibration scenarios.
Brochure
Brochure: Revolutionary GMR Cam/Crankshaft Sensors
The new Allegro ATS16951 crankshaft and ATS16351 camshaft sensors leverage giant-magnetoresistance (GMR) technology to create an ideal pairing for hybrid vehicle engines, two-wheelers, off-road vehicles, and other application designs that require extended air-gap performance.