A universal sensor signal conditioning ASIC
Zheng Zheng; Raminder; Singh, J.; Sridhar, U.; Tan Khen-Sang
ASICs, 1999. AP-ASIC apos;99. The First IEEE Asia Pacific Conference on
Volume , Issue , 1999 Page(s):120 - 126
Digital Object Identifier   10.1109/APASIC.1999.824043
Summary: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

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