Allegro offers the most comprehensive portfolio of magnetic speed sensors ICs, covering the full range of speed and speed with direction, two- and three-wire interface, magnetic encoder (ring magnet) and gear tooth sensing , Hall and GMR technology, and ASIL compliance options for transmission, wheel speed, engine, e-motors, and many more encoder and gear tooth sensing applications.
The innovative Allegro Hall-effect and GMR technology provides the most robust and reliable gear tooth and ring magnet speed sensing in the world.
Thanks to decades of application and algorithm experience and close collaboration with OEMs, Allegro develops application-specific speed sensor ICs that are optimized for your target applications—improving safety, reliability and performance.Allegro magnetic speed sensors offer:
We provide fully integrated IC solutions for EMC protection and true power-on state (TPOS). Optional back-biased magnets simplify your design while improving performance.
With high performance and excellent edge accuracy, our fully integrated ICs are also highly flexible. We offer optimized solutions for engines in 2-wheelers and advanced solutions that are essential for start-stop engines.
Working on something other than a vehicle? Our portfolio provides optimized speed sensor IC solutions for many non-automotive applications.
Allegro's ICs are ready for any challenge presented by fuel-efficient 6 to 10-speed transmissions, providing you with industry-leading vibration immunity and dynamic air gap capability.
The ATS19580 is a giant magnetoresistance (GMR) integrated circuit (IC) with integrated protection and a back biasing magnet for sensing speed and direction of rotating ferromagnetic gear tooth targets at large air gaps.
The A17502 is a single IC solution designed for rotational position sensing of a ring magnet target found in automotive and industrial electric motor applications.