Title :
A universal sensor signal conditioning ASIC
Author :
Zheng Zheng ; Raminder ; Singh, Jit ; Sridhar, Uppili ; Khen-Sang, Tan
Author_Institution :
Inst. of Microelectron., Singapore
fDate :
6/21/1905 12:00:00 AM
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;
Conference_Titel :
ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-5705-1
DOI :
10.1109/APASIC.1999.824043
