Title :
A 0.12mm2 7.4μW micropower temperature sensor with an inaccuracy of ±0.2°C (3σ) from −30°C to 125°C
Author :
Souri, Kamran ; Makinwa, Kofi
Author_Institution :
Electron. Instrum. Lab., Delft Univ. of Technol., Delft, Netherlands
Abstract :
A temperature sensor intended for RFID applications has been realized in a 0.16μm standard CMOS process. After a single digital trim at 30°C, it achieves an inaccuracy of ±0.2°C (3σ) over the temperature range: -30°C to 125°C. At a conversion rate of 10Hz, it achieves a resolution of 15mK. The sensor is compact, occupying only 0.12mm2, and power efficient, drawing 4.6μA from a 1.6V to 2V supply, which corresponds to a minimum power dissipation of 7.4μW, the lowest ever reported for a precision temperature sensor.
Keywords :
CMOS integrated circuits; temperature sensors; RFID applications; frequency 10 Hz; micropower temperature sensor; power 7.4 muW; power dissipation; precision temperature sensor; standard CMOS process; temperature -30 degC to 125 degC; temperature 15 mK; voltage 1.6 V to 2.0 V; CMOS integrated circuits; Capacitors; Radiofrequency identification; Substrates; Temperature measurement; Temperature sensors; Transistors;
Conference_Titel :
ESSCIRC, 2010 Proceedings of the
Conference_Location :
Seville
Print_ISBN :
978-1-4244-6662-7
DOI :
10.1109/ESSCIRC.2010.5619828
