Multi-channel multi-mode ROIC with embedded calibrations for environmental gas sensors

This paper reports the fabrication of a readout integrated circuit for various environmental gas sensors in a TSMC 0.25 pm CMOS process. It has an area of 6.67 mm 2 and a power consumption of 17.5 mW at a supply voltage of 2.5 V. The proposed readout integrated circuit has four input channels and ca...

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Bibliographic Details
Published in2017 IEEE SENSORS pp. 1 - 3
Main Authors Soo-Hwan Shin, Sangyoub Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
baseline
Calibration
Gas detectors
gas sensor
Heating systems
low dropout regulator
operating temperature
readout integrated circuit
Resistance
Temperature measurement
Temperature sensors
voltage divider
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Summary:This paper reports the fabrication of a readout integrated circuit for various environmental gas sensors in a TSMC 0.25 pm CMOS process. It has an area of 6.67 mm 2 and a power consumption of 17.5 mW at a supply voltage of 2.5 V. The proposed readout integrated circuit has four input channels and can operate in voltage, current, and resistance sensing modes. A voltage buffer and a current source are used to accommodate different types of signals. The output DC level and the operating temperature of the sensor are easily calibrated respectively by a voltage divider and a low dropout regulator with a temperature sensing function.
DOI:10.1109/ICSENS.2017.8233997