Quality Standards and Environmental Certifications

Crankshaft Sensor ICs

Our direction detection, vibration robustness and high accuracy out of stop/start conditions get your high efficiency engines started quickly and smoothly. Allegro provides fully integrated IC solutions for EMC protection and excellent edge accuracy in your crankshaft applications. Optional back-biased magnets simplify design while improving performance. Our speed sensor ICs are highly flexible and programmable for your various application requirements.

Featured Products

A1342 Product Image

A16601

The A16601 AC-coupled Hall-effect sensor IC is a monolithic integrated circuit that switches in response to changing differential magnetic fields created by rotating ring magnets and, when coupled with a magnet, by ferrous targets.

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ATS694 Product Image

ATS694

The ATS694LSM is a combined Hall-effect sensing integrated circuit, back-biasing rare-earth pellet, and EMC protection circuit that provides a user-friendly, PCB-less solution for true zero-speed digital crankshaft sensing. The ATS694 provides speed and direction information through a variable ...

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Crankshaft Sensor ICs Selection Guide

GMR Technology

Allegro ICs Based on Giant Magnetoresistance (GMR)

Allegro MicroSystems, LLC is a world leader in developing, manufacturing, and marketing high-performance integrated circuits (ICs), which incorporate high performance magnetic transducers. This whitepaper provides a basic understanding of the giant magnetoresistance (GMR) effect and how Allegro ...

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News

Allegro MicroSystems Announces the Shipment of its Billionth Gear Tooth Sensor IC

Jun 19, 2018

Allegro MicroSystems, LLC is celebrating a milestone for its popular line of Gear Tooth Sensor (GTS) ICs, which surpassed one billion total units shipped. These revolutionary ICs were first released to market more than 15 years ago, and are staples in engine management, transmission and braking ...

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Speed Sensors

Impact of Magnetic Relative Permeability of Ferromagnetic Target on Back-Biased Sensor Output

This application note aims to describe the target relative magnetic permeability impact on Allegro back-biased magnetic sensor output.

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Semiconductors (general)

Allegro Product Selection Guide

Sense. Regulate. Drive. Check out our device offerings and packages across all of our product families in this PDF selection guide.

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