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Two-Wire Hall-effect switches are most commonly used in sensing absolute position or proximity. They are referred to Two-Wire because they utilize two pins: Supply and ground. The output signal is a modulation of the supply current. This current interface can be used to easily diagnose interconnect failures. These contactless sensing solutions require few external components and can withstand the hostile operating conditions of automotive applications. Typical applications include: seat belt buckles, seat track, occupant sensor, appliances, and other applications looking to reduce system wiring.
Specific advantages of Allegro’s solutions include:
Allegro has a broad range of devices sensitivities that cover just about any application requirement.
See All Our Magnetic Digital Position Sensor ICs Here.