General Purpose Speed Sensors
Allegro’s general-purpose speed sensors bring proven automotive-grade performance to industrial applications. With decades of algorithm expertise and system-level design experience, our solutions deliver reliable speed and direction sensing in harsh environments.
Featured Products
ATS668LSM
The ATS668LSM is an optimized Hall-effect integrated circuit (IC) and permanent magnet pellet combination with integrated EMC protection components to provide a user-friendly solution for true zero-speed digital gear tooth sensing.
ATS17501
The ATS17501 is a single IC solution designed for rotational position sensing of a ferrous gear target found in automotive and industrial electric motor applications.
A17301
The A17301 integrates a single IC and EMC components into a small SIP package, providing a robust and cost-effective solution for digital ring-magnet sensing or ferromagnetic target sensing when coupled with a back-biasing magnet.
General Purpose Speed Sensors Selection Guide
Selection & Solution Guides
Allegro Product Selection Guide (PDF)
Documentation & Resources
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
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
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.