This part is a kind of semiconductor called AS5147.

Function of this product has 14-Bit On-Axis Magnetic Rotary Position Sensor.

Manufacturers : ams

Image and pinout :

Some of the text within the PDF file :

AS5147 14-Bit On-Axis Magnetic Rotary Position Sensor with 11-bit Binary Incremental Pulse Count General Description The AS5147 is a high-resolution rotary position sensor for fast absolute angle measurement over a full 360-degree range. This new position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency. The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5147 and to program non-volatile settings without a dedicated programmer. Incremental movements are indicated on a set of ABI signals with a maximum resolution of 2048 steps / 512 pulses per revolu [ ... ]

AS5147 PDF Datasheet Download