Magnetic Speed Sensing

Did you know that Allegro was the first semiconductor company to integrate magnets into our ICs? We created the first back-biased solutions in the industry, which offered unparalleled ease of use and time to market for our customers. Our innovative Hall-effect and GMR technologies now provide the most robust, reliable and intelligent gear tooth and ring magnet speed sensors in the world.

And thanks to decades of application and algorithm experience and close collaboration with OEMs, we develop application-specific speed sensor ICs that are optimized for your target applications—improving safety, reliability and performance.

Camshaft Sensor ICs


Allegro camshaft sensors improve engine performance and reduce engine emissions.

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. 


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Camshaft Sensor ICs


Allegro camshaft sensors improve engine performance and reduce engine emissions.

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. 


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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.


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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.


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Transmission Sensor ICs


Allegro's ICs are ready for any challenge presented by fuel-efficient 6 to 10 speed transmissions. Decades of system level expertise are built into each of our designs, providing you with industry leading vibration immunity and dynamic air gap capability.


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Transmission Sensor ICs


Allegro's ICs are ready for any challenge presented by fuel-efficient 6 to 10 speed transmissions. Decades of system level expertise are built into each of our designs, providing you with industry leading vibration immunity and dynamic air gap capability.


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Wheel Speed Sensor ICs


Our patented, best-in-class GMR technology provides low jitter and high air gap over the widest installation tolerance. We achieve the accuracy levels needed for advanced braking and autonomous vehicle applications.


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Wheel Speed Sensor ICs


Our patented, best-in-class GMR technology provides low jitter and high air gap over the widest installation tolerance. We achieve the accuracy levels needed for advanced braking and autonomous vehicle applications.


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General Purpose Speed Sensor ICs


Working on something other than a  vehicle? Our portfolio provides optimized speed sensor IC solutions for many non-automotive applications where speed or speed and direction information are needed.


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General Purpose Speed Sensor ICs


Working on something other than a  vehicle? Our portfolio provides optimized speed sensor IC solutions for many non-automotive applications where speed or speed and direction information are needed.


Learn More