Optimization of integrated magnetic sensor by mixed signal processing

Author

Trontelj, Janez

Author_Institution

Fac. of Electr. Eng., Ljubljana Univ., Slovenia

Volume

1

fYear

1999

fDate

1999

Firstpage

299

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE

Conference_Location

Venice

ISSN

1091-5281

Print_ISBN

0-7803-5276-9

Type

conf

DOI

10.1109/IMTC.1999.776765

Filename

776765