Diodes' 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.
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- 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
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- 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
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| Applications |
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- 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
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- Level, proximity, and position switches
- Contact-less switches in home appliances and industrial applications
- Smart cover or dock detect for cellular phones and tablets
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