ホイール速度センサー IC
当社特許のクラス最高GMR技術は、最も広い実装公差にわたって低ジッターと高エアギャップを提供するとともに、極めて精密な車輪速および位置測定のための高い精度も実現するため、先進ブレーキシステムや自動運転アプリケーションに最適です。また、鉄製およびリングマグネットのターゲットに対応するホール効果式速度センサも提供しています。
Featured Products
A19352
The A19352 is a giant magnetoresistance (GMR) magnetic sensor integrated circuit (IC) designed to measure ring magnets to provide wheel speed and direction data.
ATS682
The ATS682LSH is a Hall-effect integrated circuit and rare earth pellet combination that provides a user-friendly solution for true zero-speed digital gear-tooth sensing in two-wire applications.
ATS604
The ATS604 is an advanced gear tooth sensor designed for automotive wheel speed sensing applications
A19200
User-Friendly, Versatile Wheel Speed Sensor IC
ホイール速度センサー IC 選択ガイド
Documentation & Resources
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
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.
Brochure
Brochure: Allegro Wheel Speed Sensor ICs
Options to meet your evolving needs.
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
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
Methods and Validation of Stray Magnetic Field Mitigation in Magnetic Speed Sensor ICs
AN296250 - This document provides an overview of the phenomena of stray magnetic fields, its various sources, solutions developed to minimize its effects, and product proposals tolerant to stray field perturbations.
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
Video
Allegro Differential Speed Sensor System Solutions
Seth Prentice, Strategic Marketing Manager for Allegro MicroSystems Speed Sensor IC group, discusses IC solutions for designing speed sensing applications including automotive transmissions, washing machine drum speeds, and fork lift positioning requiring reliable consistent output signals.