The iC-MP, available from iC-Haus, is a space-saving system-on-chip solution for sensing an absolute angular position. In combination with a diametric permanent magnet, the iC-MP represents an absolute and incremental encoder with 1.4° resolution. The 4mm x 4mm QFN28 package contains the integrated Hall sensors with signal amplifier and gain control, an A/D converter to transfer the 8-bit digital data into a linear ramp plus a serial interface. The applications in the industrial and automotive field include Potentiometer replacement, manual or automatic actuators, position control and aquisition and absolute rotating angle measurement. The linear output can be programmed for the rotating direction and for angular ranges of 90˚, 180˚, 270˚ or 360˚. The output swing is rail-to-rail, but can be set to 10% to 90% of the supply voltage to distinguish failure by short circuit of the output line to ground or to the supply voltage. For data transfer and programming, a serial interface is integrated as well. The configuration settings are programmed into the on-chip non-volatile OTP-ROM. The automatic gain control compensates variation in the Hall signal strength caused by temperature or magnet distance changes. The iC-MP operates with a 5V supply voltage in an ambient temperature range of -40˚C to +125˚C.
