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A CMOS temperature sensor with an energy-efficient zoom ADC and an Inaccuracy of ±0.25°C (3s) from −40°C to 125°C

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3 Author(s)
Souri, K. ; Delft Univ. of Technol., Delft, Netherlands ; Kashmiri, M. ; Makinwa, K.

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.

Published in:

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International

Date of Conference:

7-11 Feb. 2010