Three-Wire Hall-Effect Switches

Three-Wire Hall-effect switches are most commonly used in sensing absolute position or proximity. They are referred to 3-Wire because they utilize three pins: Supply, ground, and a voltage output. These contactless sensing solutions require few external components and can withstand the hostile operating conditions of automotive applications. Typical applications include: shift selectors, wiper end/home position, door ajar/open, user interfaces and vane-interrupt systems.






Specific advantages of Allegro’s solutions include:

  • 4× chopper stabilization for superior temperature stability and resistance to physical stress
  • ISO26262 compliance for automotive safety systems 
  • Low-voltage (3 V) operation
  • Key performance characteristics specified over the full operating voltage and ambient temperature ranges
  • Designed to survive harsh automotive environments
  • Planar hall and vertical hall options.

Allegro has a broad range of devices sensitivities that cover just about any application requirement.

Solutions using temperature switches, Hall-effect switches, and magnetic sensor IC switches



See All Our Magnetic Digital Position Sensor ICs Here.

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