Diodes AH1889-Z-7 is a high sensitivity dual output Unipolar Hall effect IC which can detect either a North or South pole independently and switch one of its two outputs with internal pull up and pull down capability. The AH1889-Z-7 is mainly designed for low voltage applications which require a quick response time and can operate over the supply voltage of 1.65V to 3.6V. To minimize PCB space AH1889-Z-7 outputs have internal pull up and pull down capability and is packaged in a small low profile SOT553 package. A South pole of sufficient strength will turn OUTPUT1 on and a North pole of sufficient strength with turn on OUTPUT2. While the magnetic flux density (B) perpendicular to the package is larger than operate point Bops or Bopn, the appropriate output will be turned on (pulled low), the output is held until B is lower than release point Brps or Brps, then turned off (high). The outputs will be turned off and will remain off when there is no magnetic field.
Feature
- Two monolithic Unipolar Hall effect sensor switch - Operation with a South pole (OUTPUT1) - Operation with a North pole(OUTPUT2)
- Supply voltage of 1.65V to 3.6V
- Quick response time without sleep mode
- Open drain output
- Chopper stabilized design for - Superior temperature stability - Minimal switch point drift - Enhanced immunity to physical stress
- Good RF noise immunity
- -40oC to 85oC Operating Temperature
- ESD > 4kV in Human Body Mode
- Small low profile SOT553 packages
Applications
• Position and proximity detection for consumer, office equipement and industrial applications• Open and close detect switches for home appliances• Doors, lids and trays position detect switches• On/Off Contact-less switches • Magnetic field direction detection
