A mixed-mode circuit for interface control and gas sensor resistance measurement

Abstract

3- AM - A mired-mode interface circuit for monolithically integrated gas sensor arrays has been developed Circuiity includes interface electronics for inspection of up to four sensors array and interface logic for sman control. Because of its characteristics (IS robustness. small, size, low price and future capabilities with the adequate signal processing the system composed by the sensor and the application specific integrated circuit would be able to cover most of today markets considered for gas sensors.