The AD22151 is a linear magnetic field transducer with adjustable offset for unipolar or bipolar operation, low offset drift over temperature range, adjustable gain over wide range, low gain drift over temperature range, adjustable first order temperature compensation, and ratiometric to VCC.
The AD22151 is a linear magnetic field transducer that provides a voltage output proportional to the magnetic field applied perpendicular to the package top. It features adjustable offset for unipolar or bipolar operation, low offset and gain drift over a temperature range of –40 °C to +150 °C, and ratiometric output to the supply rail. The sensor can be configured for various gain settings and includes built‑in temperature compensation.
Typical applications include throttle, pedal, suspension and valve position sensing in automotive systems, as well as absolute position and proximity sensing in industrial equipment. The device operates from a single 5 V supply, can drive up to 1 mA into capacitive loads, and offers a linear output range of 10 %–90 % of VCC.
| Supply Voltage (VCC) Operating | 5.0 V (typical, 4.5‑6.0 V range) |
|---|---|
| Supply Current (ICc) Operating | 10 mA |
| Sensitivity (Gain = +1) | 0.4 mV/G |
| Linear Output Range | 10 %–90 % of VCC |
| Drive Capability | 1.0 mA |
| Offset at 0 Gauss | 3 V |
| Output Short‑Circuit Current | 5.0 mA |
| Nonlinearity (10 %‑90 % range) | 0.1 % FS |
| Gain Error (over temperature) | +1 % |
| Operating Temperature Range | -40 °C to +150 °C |
The AD22151 operates from a 5 V supply, with a typical range of 4.5 V to 6.0 V.
The device draws up to 10 mA of supply current during normal operation.
With a gain of +1, the sensor provides a sensitivity of 0.4 mV per Gauss.
The sensor is rated for operation from –40 °C up to +150 °C.