Diodes Incorporated

AH1389, Dual-Output, Unipolar Hall-Effect Switch

Diodes' AH1389, dual-output unipolar Hall-effect switch offers high sensitivity with independent north and south pole detect outputs

Image of Diodes' AH1389 Hall Effect SwitchDiodes' AH1389 is a miniature, micropower, unipolar Hall-effect switch IC with dual outputs. It is ideally suited for portable and battery-powered consumer equipment, home appliances, and industrial applications.

Its 1.6 V to 3.6 V supply voltage supports battery-powered equipment and low-voltage microcontrollers and with the sleep function the average supply current is only 4 µA. A north pole of sufficient strength turns OUTPUT1 on (pulled low), and a south pole of sufficient strength turns OUTPUT2 on (pulled low). Output1 remains on until the magnetic flux density (B) rises above the north field release point BRPN (-20 G typical) while Output2 remains low until B falls below the south field release point BRPS (+20 G typical). The AH1389 has an 8 kV ESD rating on the supply and output pins. The AH1389 is packaged in the tiny-footprint, low-profile X2-DFN1410-4.

Features
  • Dual-output unipolar feature functions independently to detect north and south poles
    • Output1 responds to north pole and Output2 responds to south pole
    • No external pull-up required
      • Minimal external components
  • Designed for battery-powered equipment and industrial applications
    • 1.6 V to 3.6 V supply voltage supports industrial battery-powered applications
    • 4 µA micropower operation
  • Small footprint and low-profile packages
    • X2-DFN1410-4 (1.0 mm x 1.4 mm x 0.37 mm) occupies on 1 mm²
  • High performance and reliability
    • Tight magnetic operating window (reduced magnetic thresholds spread) over full operating voltage and temperature range
    • Chopper stabilized to provide minimal switch-point drift and superior temperature stability
    • Operating temperature range of -40°C to 85°C
    • High ESD (HBM) rating of 8 kV
Applications
  • Screen position detect for digital still / video cameras and handheld gaming consoles
  • Doors, lids, and tray position detect switches for home appliances and industrial applications
  • Level, proximity, and position switches
  • Contact-less switches in home appliances and industrial applications
  • Smart cover or dock detect for cellular phones and tablets

AH1389 Hall-Effect Switch

ImageManufacturer Part NumberDescriptionPolarizationAvailable QuantityPriceView Details
MAGNETIC SWITCH UNIPOLAR DL 4DFNAH1389-HK4-7MAGNETIC SWITCH UNIPOLAR DL 4DFNNorth Pole, South Pole3468 - Immediate$0.46View Details
Published: 2016-12-27