Readout electronics with calibration and on-line test for resistive sensor bridges

Author

Machul, O. ; Hammerschmidt, D. ; Brockherde, W. ; Hosticka, B.J.

Author_Institution

Fraunhofer-Inst. of Microelectron. Circuits & Syst., Duisburg, Germany

fYear

1996

fDate

5-8 May 1996

Firstpage

307

Lastpage

310

Abstract

In this paper a digitally programmable readout electronics for resistive sensor bridges is presented together with an efficient method for calibration based on the principle of piecewise linear interpolation. The calibration enables a temperature compensation in the range between -40°C and +120°C. The architecture also allows an automatic calibration process with a minimum expenditure of external hardware. In addition the system contains an implemented function for monitoring the resistive sensor bridge condition during operation. For automotive applications an integrated voltage regulator is available so that the chip can optionally operate either at a stabilized 5 V power supply voltage or use an unregulated voltage in the range between 7.5 V and 16 V

Keywords

bridge circuits; calibration; circuit testing; compensation; digital readout; electric sensing devices; -40 to 120 C; 5 V; 7.5 to 16 V; automatic calibration; automotive applications; circuit architecture; digitally programmable readout electronics; integrated voltage regulator; on-line testing; piecewise linear interpolation; resistive sensor bridge; temperature compensation; Bridge circuits; Calibration; Electronic equipment testing; Hardware; Interpolation; Piecewise linear techniques; Readout electronics; Temperature distribution; Temperature sensors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1996., Proceedings of the IEEE 1996

Conference_Location

San Diego, CA

Print_ISBN

0-7803-3117-6

Type

conf

DOI

10.1109/CICC.1996.510564

Filename

510564