Integrated monolithic temperature sensors for acquisition and regulation

The monolithic integration of temperature sensors and sensor electronics considerably lowers system costs since the sensor signal can be processed and evaluated on the same chip. This paper describes the design of CMOS temperature sensors and associated acquisition circuitry. Problems connected with the high-temperature operation of analog MOS electronics are addressed and two temperature sensors based on two different principles are presented. Both sensors have been integrated with a switched-capacitor precision amplifier. (IMS)