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