Abstract
We present a novel current–mode fully–integrable oscillating circuit for the interfacing of resistive gas sensors, using a reduced number of active blocks, in particular low voltage low power Second Generation Current Conveyors (CCIIs), to be used in portable applications. The proposed front–end, operating a Resistance–to–Time (R–T) conversion, can be utilized for AC–excited resistive sensors and does not need any initial calibration. Simulation and preliminary measurement results on a prototype board performed on the whole system have shown good linearity and agreement with theoretical expectations.
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De Marcellis, A. et al. (2010). A Novel Calibration-Less CCII-Based Resistance-to-Time Front-End for Gas Sensor Interfacing. In: Malcovati, P., Baschirotto, A., d'Amico, A., Natale, C. (eds) Sensors and Microsystems. Lecture Notes in Electrical Engineering, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3606-3_54
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DOI: https://doi.org/10.1007/978-90-481-3606-3_54
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