A 0.4V 280-nW frequency reference-less nearly all-digital hybrid domain temperature sensor

Wenfeng Zhao, Rui Pan, Yajun Ha, Zhi Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

This paper presents a subthreshold frequency reference-less temperature sensor. Compared with the previous designs that rely on external frequency references or excessive analog blocks, this work proposes a novel subthreshold ratioed-current/delay sensor core and hybrid-domain all-digital processing technique, which eliminates the dependence on frequency reference and is scalable to technology feature size. Our sensor has been fabricated in a 65-nm CMOS process and occupies a total area of 0.022mm2. Measurement results from 8 test chips have shown that the maximum inaccuracy is -1.6oC/+1oC across 0oC to 100oC with power consumption of 280-nW at 0.4V.

Original languageEnglish (US)
Title of host publication2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages301-304
Number of pages4
ISBN (Electronic)9781479940905
DOIs
StatePublished - Jan 13 2015
Event2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014 - Kaohsiung, Taiwan, Province of China
Duration: Nov 10 2014Nov 12 2014

Publication series

Name2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers

Conference

Conference2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014
CountryTaiwan, Province of China
CityKaohsiung
Period11/10/1411/12/14

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    Zhao, W., Pan, R., Ha, Y., & Yang, Z. (2015). A 0.4V 280-nW frequency reference-less nearly all-digital hybrid domain temperature sensor. In 2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers (pp. 301-304). [7008920] (2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASSCC.2014.7008920