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The AH3323A is a high-voltage ultra high-sensitivity Hall-effect Unipolar switch IC designed for proximity, position and level sensing in industrial and consumer home appliances and personal care applications. To support a wide range of the demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3323A provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has an overcurrent limit and a Zener clamp.
The internally pulled-up output can be switched on with South pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (BOP) the output is switched on (pulled low) and is held on until the magnetic flux density B is lower than the release point (BRP).
The SOT23 (Type S) and SIP-3 (Bulk Pack) packages will require south pole to the part marking side to operate.
High Sensitivity: BOP and BRP of +55G and +35G Typical
Internal Pullup Resistor on the Output with Overcurrent Limit
0V to 28V Operating Voltage Range
Resistant to Physical Stress
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Good RF Noise Immunity
Reverse Blocking Diode
Zener Clamp on Supply and Output Pins
-40°C to +125°C Operating Temperature
High ESD HBM: 8kV
Industry Standard SOT23 (Type S) and SIP-3 (Bulk Pack) Packages