A principle and realization of an ASIC for a fast, precise, and high resolution Contact-less Inductive Position Sensor (CIPOS), is described. The inductive contact-less sensor is suitable for angular or linear position sensing. Advantage of used measurement principle is, that it is strictly ratio metric independent of absolute values. The mechanical robustness, insensitivity to temperature variation, electrical or magnetic fields as well as its mechanical tolerances make the sensor ideal for harsh automotive environment. The sensor fulfils all the requirements for safety relevant applications. The presented ASIC includes sensor excitation, precise input signal analog and digital processing as well as the output signal transmitter. The signal path and main blocks are described.
An inductive position sensor ASIC
Ein induktiver ASIC-Positionssensor
2008
21 Seiten, 25 Bilder, 1 Tabelle, 5 Quellen
Conference paper
English
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