• A1101EUA-T Hall Effect Switch

A1101EUA-T Hall Effect Switch

The A1101EUA Hall-effect, unipolar switches are extremely temperature-stable and stress-resistant sensor ICs.

Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated voltage regulator permits operation from 3.8 to 24 V. The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components.

A south pole of sufficient strength turns the output on. Removal of the magnetic field turns the output off.


  • Unipolar switch points
  • Resistant to physical stress
  • Regulator stability without a bypass capacitor
  • Stable operation over full operating temperature range
  • Reverse battery protection
  • Solid-state reliability


A1101EUA-T Datasheet

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A1101EUA-T Hall Effect Switch

  • £2.34

  • Ex Tax: £1.95

Allegro Microsystems

Tags: A1101EUA, Hall, Effect, Switch, magnet, A1101EUA-T, Allegro Microsystems