Title :
Optimization of integrated magnetic sensor by mixed signal processing
Author_Institution :
Fac. of Electr. Eng., Ljubljana Univ., Slovenia
Abstract :
An array of integrated Hall elements is presented to maximize signal to noise ratio and to minimize the offset. Novel magnetic sensor bias circuits and signal amplification circuit suitable for sensor arrays are shown. The positioning of sensor array elements on the ASIC, to precisely determine the spatial distribution of the magnetic field for various physical quantity measurement applications, is discussed. On board sensor calibration together with controlled temperature behavior to compensate for the non-ideal temperature behavior of the applied magnetic field is demonstrated to allow for a robust design suitable for volume ASIC production
Keywords :
CMOS integrated circuits; Hall effect transducers; array signal processing; calibration; compensation; magnetic sensors; mixed analogue-digital integrated circuits; signal processing equipment; CMOS Hall element; array of integrated Hall elements; array signal processing; closed loop system; controlled temperature behavior; integrated coil; integrated magnetic sensor; magnetic sensor bias circuits; minimized offset; mixed signal processing; on board sensor calibration; optimization; robust design; signal amplification circuit; signal to noise ratio; spatial magnetic field distribution; volume ASIC production; Application specific integrated circuits; Calibration; Magnetic circuits; Magnetic field measurement; Magnetic sensors; Position measurement; Sensor arrays; Signal to noise ratio; Temperature control; Temperature sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Conference_Location :
Venice
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.776765
