Title :
A Novel on-chip ultra-low power temperature sensing scheme
Author :
Chouhan, S.S. ; Halonen, Kari
Author_Institution :
Dept. of Micro & Nano Sci., Aalto Univ., Espoo, Finland
Abstract :
In this work, a CMOS based temperature sensor with Nano-watt power consumption is presented. The proposed scheme utilizes sensitivity of MOS towards temperature in subthreshold region. Sensor is composed of PMOS and NMOS group which subsequently generates voltages that are having positive and negative temperature coefficients respectively. It has been observed that on subtracting these voltages, resultant shows, highly linear dependence with temperature. The proposed scheme is implemented using AMS 0.35 μm standard CMOS technology, and it shows wide temperature sensing ranges from -40 °C to +140 °C with a power consumption of tens of Nano watts.
Keywords :
CMOS integrated circuits; low-power electronics; temperature sensors; AMS 0.35 μm standard CMOS technology; CMOS based temperature sensor; NMOS group; PMOS group; nanowatt power consumption; negative temperature coefficients; on-chip ultra-low power temperature sensing scheme; positive temperature coefficients; power consumption; size 0.35 mum; subthreshold region; temperature -40 degC to 140 degC; CMOS integrated circuits; MOS devices; Temperature; Temperature dependence; Temperature sensors; Threshold voltage; CMOS; Subthreshold; low power; temperature sensor;
Conference_Titel :
NORCHIP, 2012
Conference_Location :
Cpenhagen
Print_ISBN :
978-1-4673-2221-8
Electronic_ISBN :
978-1-4673-2222-5
DOI :
10.1109/NORCHP.2012.6403108
