By ams 58
Based on hall sensor technology, the ams AS5172B magnetic position sensor measures the orthogonal component of the flux density (Bz) over a full-turn rotation, and compensates for external stray magnetic fields with a robust architecture based on a 14-bit sensor array and analog front end (AFE). A sub-range can be programmed to achieve the best resolution for the application. To measure the angle, only a simple two-pole magnet rotating over the center of the package is required. The magnet may be placed above or below the device. The absolute angle measurement provides an instant indication of the magnet’s angular position. The AS5172 operates up to a voltage of 16.5 V and is protected against overvoltage up to +20 V. In addition, the supply pins are protected against reverse polarity up to -18 V. Programmability over the VDD pin reduces the number of pins on the application connector. The AS5172 is available in a TSSOP-14 package and in a SiP (System in Package).
The SiP has integrated the AS5172 sensor die together with the decoupling capacitors necessary to pass system level ESD and EMC requirements. No additional components and PCB on the sensor side are needed. The product is defined as SEooC (safety element out of context) according to ISO 26262.
