A programmable sensor conditioning interface for low-power applications

Cost reduction in wireless sensor networks becomes a requirement to extend their application in fields where a great amount of sensors is needed. In those cases, the use of smart sensors is expensive, requiring applying low-cost analogue sensors. This paper presents an interface for analogue sensors designed to adapt their output, optimizing the sensor span. The proposed interface includes both electronic and software elements, and components that let self-calibration to compensate undesired effects in the electronics.