Title :
CMOS intelligent temperature sensor
Author :
Rasmussen, W. ; Zhu, J. ; Richard, S. ; Cheeke, D.
Author_Institution :
Coll. de Sherbrooke, Que., Canada
Abstract :
The design of a single-chip CMOS intelligent temperature transducer with a resolution of .1°C and an accuracy of better than .5°C between -40 and +125°C is presented. The sensor is based on the temperature variations of p-well and polysilicon resistors incorporated in RC relaxation oscillators. Linearization and correction for process variations are carried out on-chip with an EPROM and digital correction circuits
Keywords :
CMOS integrated circuits; application specific integrated circuits; digital integrated circuits; relaxation oscillators; temperature measurement; thermometers; -40 to 125 C; CMOS intelligent temperature sensor; RC relaxation oscillators; accuracy; correction for process variations; digital correction circuits; linearisation; on chip EPROM; p-well resistors; polysilicon resistors; resolution; single-chip transducer; CMOS process; CMOS technology; EPROM; Electrical resistance measurement; Intelligent sensors; Oscillators; Resistors; Sensor phenomena and characterization; Temperature measurement; Temperature sensors;
Conference_Titel :
Circuits and Systems, 1990., Proceedings of the 33rd Midwest Symposium on
Conference_Location :
Calgary, Alta.
Print_ISBN :
0-7803-0081-5
DOI :
10.1109/MWSCAS.1990.140853
