Diodes Incorporated AH35xx Hall Effect Omnipolar Switches

Diodes Incorporated AH35xx Hall Effect Omnipolar Switches are high voltage, high sensitivity switch ICs designed for proximity, position, and level sensing. These hall-effect switches are optimized to operate over a supply voltage range of 3V to 28V. The AH35xx switches incorporate chopper stabilized architecture and an internal bandgap regulator that provides a reliable solution over the whole operating range. These hall-effect switches employ a reverse blocking diode with a Zener clamp on the supply, an over-current limit, and a Zener clamp on the output. The AH35xx switches provide an output that can be switched on with a south or north pole of sufficient strength. Typical applications include position and proximity sensing, open and close detect, position detection, level detection, flow meters, and contact-less switches.

Features

  • Omnipolar operation
  • 3V to 28V operating voltage range
  • Chopper stabilized design provides:
    • Superior temperature stability
    • Minimal switch point drift
    • Enhanced immunity to stress
  • Good Radio Frequency (RF) noise immunity
  • Zener clamp on supply and output pins
  • Reverse blocking diode
  • -40°C to 125°C operating temperature range
  • Industry standard SOT23 and SIP-3 (ammo pack), SIP-3 (bulk pack) packages
  • Lead-free and RoHS compliant
  • Halogen and antimony-free 

Applications

  • Position and proximity sensing in:
    • Consumer home appliances, building automation, office equipment, and industrial applications
  • Open and close detect
  • Position detect
  • Level detect
  • Flow meters
  • Contact-less switches

Functional Block Diagrams

Application Circuit diagrams

Publicado: 2018-10-25 | Actualizado: 2022-09-30