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
Technical Article
How Speed Sensors are Making Two-Wheelers Smarter and Safer New
Two-wheelers have established themselves as a fundamental means of transportation throughout the world, being a lower-cost and smaller alternative to the automobile while maintaining freedom and independence compared to public transportation.
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
EV Traction Motor Requirements and Speed Sensor Solutions
AN296226 - This paper explores the general requirement trends for speed and position sensors in traction motor systems, including high-speed capability, accuracy at startup, low-speed operation, immunity to vibration, EMC robustness, and safety.
Application Note
Speed Sensor Protocols
AN296246 - This application note provides a detailed description of commonly used output protocols implemented in speed sensors. It also lists the benefits and drawbacks of each and provides information on the safety mechanisms these protocols offer to achieve compliance with the latest automotive safety standards.
Application Note
Fundamental Properties of Speed Sensors
The aim of this application note is to provide a solid foundation for understanding and comparing the fundamental properties of speed sensors that are valid not only for Allegro products but for speed sensors in general.
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
Understanding Input Signal Variation in Sensor ICs with SolidSpeed Digital Architecture
AN29622 - This application note is to be used to aid the understanding of these datasheet line items. This specification change can be seen in the A19302 and A19571 datasheets and will continue to be used in many parts that use this technology moving forward
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.
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.