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
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.
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
System Advantages of High-Resolution Wheel Speed Sensing
AN296228 - With the vehicle market trending toward autonomous driving in the near future, the need for high resolution in the wheel speed sensor (WSS) business becomes essential. Allegro, with input from market leaders, has released the first high-resolution wheel speed sensor (HRWSS) that targets this demand.
Application Note
Mechanical Shift of Switch Point
AN296243 - The mechanical shift of switch point is a specification that provides detail necessary to predict the location of an output edge with respect to the integrated circuit (IC) package and the target feature. This application note illustrates how to apply this specification.
Application Note
GMR Crankshaft Target Design Guidelines
AN296198 - This application note offers guidelines for designing an optimal target for crankshaft applications.
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
Brochure
Brochure: High-Resolution GMR Wheel Sensing
The Allegro A19360 high-resolution wheel speed and distance sensor provides all the robustness of a standard differential speed sensor, but with up to four times the incremental resolution from the same magnetic encoders used today.
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
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.