A universal sensor signal conditioning ASIC

Author

Zheng Zheng ; Raminder ; Singh, Jit ; Sridhar, Uppili ; Khen-Sang, Tan

Author_Institution

Inst. of Microelectron., Singapore

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

120

Lastpage

126

Abstract

This paper described a low cost universal sensor signal condition ASIC for bridge type sensors. The ASIC was produced with standard double metal, double poly 0.8 μm silicon CMOS process and can correct the sensor´s offset, offset temperature coefficient, sensitivity and sensitivity temperature coefficient. We have used this ASIC to signal condition silicon piezo-resistive pressure sensor to a total error of less than ±1% of the sensor´s full scale output (FSO) in a temperature range of -40°C to 125°C. The ASIC can provide a low cost solution for the calibration of bridge type sensors such as pressure sensor, Hall effect sensor and MR/GMR sensor

Keywords

CMOS integrated circuits; Hall effect transducers; analogue-digital conversion; application specific integrated circuits; bridge instruments; calibration; giant magnetoresistance; magnetoresistive devices; pressure sensors; sensitivity; signal processing equipment; -40 to 125 degC; 0.8 micron; CMOS process; GMR sensor; Hall effect sensor; bridge type sensors; calibration; double metal double poly process; offset temperature coefficient; piezo-resistive pressure sensor; sensitivity; sensitivity temperature coefficient; signal conditioning ASIC; universal sensor; Application specific integrated circuits; Bridges; CMOS process; Calibration; Costs; Hall effect devices; Sensor phenomena and characterization; Silicon; Temperature distribution; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-5705-1

Type

conf

DOI

10.1109/APASIC.1999.824043

Filename

824043