A 12μs-Conversion, 20mK-Resolution Temperature Sensor Based on SAR ADC
SCIE
SCOPUS
- Title
- A 12μs-Conversion, 20mK-Resolution Temperature Sensor Based on SAR ADC
- Authors
- KU, HWANSEOK; Seungnam Choi; SIM, JAE YOON
- Date Issued
- 2022-03
- Publisher
- Institute of Electrical and Electronics Engineers
- Abstract
- This paper presents a temperature sensor suitable for heavily duty-cycled wireless sensor node. To achieve both a fine resolution and a fast conversion time, the proposed temperature sensor embeds a RC network in a 16-bit residue-integrated successive approximation register (SAR) analog-to-digital conversion (ADC). A poly resistor is connected in series with the capacitor digital-to-analog converter (DAC) to develop a temperature-dependent ADC input. The proposed temperature sensor, implemented in 180nm CMOS, achieves a resolution of 20mK in a range of -30-to-100∘C. It shows a resolution figure-of-merit of 3pJ∙K2 while supporting a burst operation in a conversion time of 12μs after wake-up.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/110300
- DOI
- 10.1109/TCSII.2021.3107899
- ISSN
- 1549-7747
- Article Type
- Article
- Citation
- IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 69, no. 3, page. 789 - 793, 2022-03
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