SEC A1103
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.
| Part No. |
A1103 |
| Datasheet |
A1103
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| Manufacturer |
 SEC |
| Description |
Unipolar Hall-Effect Digital Switch |
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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 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) Functional Block Diagram VDD Voltage Regulatr OUT Chopper Hall Plate GND SIP Package Pin 1 – V DD Pin 2 – GND Pin 3 – OUT SOT Package Pin 1 – V DD Pin 2 – OUT Pin 3 – GND 1 V1.10 May 1, 2011 Datasheet pdf - A1103 Unipolar Hall-Effect Digital Switch General Descriptions These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150℃,and are more stable with both temperature and supply voltage changes.
