Title :
A CMOS quasi-digital temperature sensor for battery operated systems
Author :
Azcona, C. ; Calvo, B. ; Medrano, N. ; Celma, S. ; Sanchez-Azqueta, Carlos
Author_Institution :
Group of Electron. Design - I3A, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a high performance 1.2 V-0.18 μm CMOS quasi-digital temperature sensor with frequency output suitable to be used in battery operated systems. The proposed sensor is based on a multivibrator current-to-frequency converter and works properly over a temperature range of -40 to +120°C, with a minimum power consumption of 1.8 μW. It presents a linear response, with a sensitivity of 442 Hz/°C. Recovered temperature values show accuracy better than 1.7°C.
Keywords :
CMOS digital integrated circuits; digital instrumentation; frequency convertors; multivibrators; temperature sensors; CMOS quasi-digital temperature sensor; battery operated system; linear response; multivibrator current-to-frequency converter; size 0.18 mum; voltage 1.2 V; Accuracy; CMOS integrated circuits; Power demand; Temperature dependence; Temperature distribution; Temperature sensors; Wireless sensor networks; CMOS temperature sensor; low-voltage low-power; quasi-digital output;
Conference_Titel :
Circuit Theory and Design (ECCTD), 2013 European Conference on
Conference_Location :
Dresden
DOI :
10.1109/ECCTD.2013.6662228
