Title :
Low-Power Wide-Range Frequency-Output Temperature Sensor
Author :
Azcona, C. ; Calvo, B. ; Medrano, N. ; Celma, S.
Author_Institution :
Electron. Design Group-I3A, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a simple but effective linear frequency output temperature sensor based on a multivibrator current-to-frequency converter. Post-layout simulation results for a 1.2 V 0.18- μm CMOS design show high linearity over a temperature range from -40°C to +120°C, with an accuracy of ±1°C, a sensitivity of 354 Hz/°C and only 3 μW of power consumption, which makes the design suitable for portable systems.
Keywords :
CMOS integrated circuits; circuit simulation; frequency convertors; integrated circuit layout; low-power electronics; multivibrators; portable instruments; temperature sensors; CMOS design; linear frequency output temperature sensor; low-power wide-range frequency-output temperature sensor; multivibrator current-to-frequency converter; portable system; post-layout simulation; power 3 muW; size 0.18 mum; temperature -40 degC to 120 degC; voltage 1.2 V; Accuracy; CMOS integrated circuits; Frequency conversion; Ocean temperature; Temperature distribution; Temperature sensors; CMOS integrated circuits; low-voltage low-power; quasi-digital output; temperature sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2014.2303499
