Multi-range, Ultra-lower Power, -20 to 60oC CMOS Smart Temperature Sensor with ±0.1oC Accuracy

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	Multi-range, Ultra-lower Power, -20 to 60oC CMOS Smart Temperature Sensor with ±0.1oC Accuracy
	Lu, S.; Law, M. K.; Mak, P. I.; Martins, R. P.
	2015-07-01
Source Publication	International Symposium on Signals, Circuits and Systems (ISSCS)
Abstract	This paper presents a mUlti-range ultra-lower power high accuracy CMOS smart temperature sensor based on substrate BJTs and a first-order incremental delta-sigma analog-to-digital converter (ΔΣ-ADC) targeting on applications where accuracy and power have higher priority over the sensing range and speed requirement. By using a reconfigurable pre-gain stage, the input range of the ΔΣ-ADC can be optimized for different application specific temperature sub-ranges, relaxing the resolution as well as power requirements for subsequent analog-to-digital conversion. High accuracy with reduced control circuit complexity is achieved through the use of dynamic element match (DEM) and multi-cycle integration. The proposed CMOS temperature sensor is designed for three temperature sub-ranges (-20°C to 7°C, 5°C to 35°C, and 33°C to 60°C) using a standard O.181lm CMOS technology. An inaccuracy of±O.loe is achieved in all the three sub-ranges using only one-point calibration while consuming 1µW.
Keyword	CMOS smart temperature sensor multi-range ultra-low power
URL	View the original
Language	英語English
The Source to Article	PB_Publication
PUB ID	19453
Document Type	Conference paper
Collection	CHEONG KUN LUN COLLEGE
Corresponding Author	Law, M. K.
Recommended Citation GB/T 7714	Lu, S.,Law, M. K.,Mak, P. I.,et al. Multi-range, Ultra-lower Power, -20 to 60oC CMOS Smart Temperature Sensor with ±0.1oC Accuracy[C], 2015.
APA	Lu, S.., Law, M. K.., Mak, P. I.., & Martins, R. P. (2015). Multi-range, Ultra-lower Power, -20 to 60oC CMOS Smart Temperature Sensor with ±0.1oC Accuracy. International Symposium on Signals, Circuits and Systems (ISSCS).

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