General Descriptions
The A1103 is a unipolar Hall-effect sensor IC fabricated from bipolar technology. The device integrates a voltage regulator, reverse battery protection diode, Hall sensor with dynamic offset cancellation system, temperature compensation circuitry, small signal amplifier, Schmitt trigger and an open-collector output to sink up to 25 mA. With suitable output pull up, they can be used with bipolar or CMOS logic circuits.

Features and Benefits
– 4.5V to 24V Operation
– -40℃ to 150℃ Superior temperature operation
– Bipolar technology
– Open-collector 25 mA output
– Reverse battery protection
– Small Size-SOT23 3L or SIP 3L
– Solid-state reliability
– Resistant to physical stress
– Activate with small, commercially available Permanent magnets

Application Examples
– Automotive, Consumer and Industrial
– Solid-state switch
– Brushless DC motor commutation
– Speed detection
– Linear position detection
– Angular position detection
– Proximity detection