TLE4926C

Note: Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

TLE4926C is an active Hall sensor suited to detect the motion and position of ferromagnetic and permanent magnet structures. An additional self-calibration module has been implemented to achieve optimum accuracy during normal running operation. It comes in a three-pin package for the supply voltage and an open drain output.

The differential Hall sensor IC detects the motion and position of ferromagnetic and permanent magnet structures by measuring the differential flux density of the magnetic field TLE4926C. To detect ferromagnetic objects the magnetic field must be provided by a back biasing permanent magnet (south or north pole of the magnet attached to the rear unmarked side of the IC package).

Offset cancellation TLE4926C is achieved by advanced digital signal processing. Immediately after power-on motion is detected (start-up mode). After a few transitions the sensor has finished self-calibration and switches to a high-accuracy mode (running mode). In running mode switching occurs at signal zero-crossing of the arithmetic mean of max and min value of magnetic differential signal. B is defined as difference between hall plate 1 and hall plate 2.