In this paper we present a flexible high-precision wide-range front-end for resistive sensors. The output of a programmable continuous-time transresistance stage is processed by a differential switched-capacitor incremental A/D converter. A digital signal processor reconfigures the interface leading to a resolution of 0.1% over a range of 5 decades, as required by pattern recognition algorithms for sensors arrays in environmental nosing applications. Particular care has been taken in reducing the power consumption.
Grassi, M., Malcovati, P., Baschirotto, A. (2005). Flexible high-accuracy wide-range gas sensor interface for portable environmental nosing purpose. In Proceedings - IEEE International Symposium on Circuits and Systems (pp.5385-5388). IEEE [10.1109/ISCAS.2005.1465853].
Flexible high-accuracy wide-range gas sensor interface for portable environmental nosing purpose
Baschirotto, A
2005
Abstract
In this paper we present a flexible high-precision wide-range front-end for resistive sensors. The output of a programmable continuous-time transresistance stage is processed by a differential switched-capacitor incremental A/D converter. A digital signal processor reconfigures the interface leading to a resolution of 0.1% over a range of 5 decades, as required by pattern recognition algorithms for sensors arrays in environmental nosing applications. Particular care has been taken in reducing the power consumption.
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