Title :
A CMOS temperature sensor with an energy-efficient zoom ADC and an Inaccuracy of ±0.25°C (3s) from −40°C to 125°C
Author :
Souri, K. ; Kashmiri, M. ; Makinwa, Kofi
Author_Institution :
Delft Univ. of Technol., Delft, Netherlands
Abstract :
A 0.26 mm2 CMOS temperature sensor is realized in a 0.16 μm CMOS process. It uses a hybrid SAR/ΔΣ (zoom) ADC to achieve 0.018°C resolution at 10S/s while dissipating 9 μW. After a 1-point trim, the sensor achieves an inaccuracy of ±0.25°C (3σ) in the range from -40°C to 125°C.
Keywords :
Δ-Σ modulation; CMOS integrated circuits; analogue-digital conversion; temperature sensors; Δ-Σ modulation; CMOS temperature sensor; analog-digital modulation; hybrid SAR; power 9 muW; size 0.16 μm; temperature -40 °C to 125 °C; zoom ADC; CMOS logic circuits; Capacitors; Clocks; Energy efficiency; Energy resolution; Micromechanical devices; Sampling methods; Temperature measurement; Temperature sensors; Voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5433898
