Magnetic Speed Sensors

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:
  • Dynamic compensation for system-level variation (i.e. target runout, vibration, thermal gradients) reducing design-in complexity and costs and increasing reliability.
  • Integrated packaging for EMC protection, as well as optional magnetic biasing that simplifies design and assembly while improving performance.
  • Integration of discrete components to eliminate the need for external PCB and components, significantly reducing total system cost (third generation GTS packages).

Portfolios

Gauges on a hybrid vehicle

Camshaft Sensor ICs

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.

Learn More

Conventional powertrain SUV parked in the mountains

Crankshaft Sensor ICs

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.

Learn More

Yellow two wheeler moped scooter

Special Purpose and E-Motor Speed Sensor ICs

Working on something other than a vehicle? Our portfolio provides optimized speed sensor IC solutions for many non-automotive applications.

Learn More

Close up on transmission gear shifter and parking brake

Transmission Sensor ICs

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.

Learn More

Side view of car and wheel

Wheel Speed Sensor ICs

Our patented, best-in-class GMR technology provides low jitter and high air gap over the widest installation tolerance.

Learn More