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

Wenfeng Zhao; Rui Pan; Yajun Ha; Zhi Yang

doi:10.1109/ASSCC.2014.7008920

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

Wenfeng Zhao
, Rui Pan
, Yajun Ha
, Zhi Yang

Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

25 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 -1.6^oC/+1^oC across 0^oC to 100^oC with power consumption of 280-nW at 0.4V.

Original language	English (US)
Title of host publication	2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	301-304
Number of pages	4
ISBN (Electronic)	9781479940905
DOIs	https://doi.org/10.1109/ASSCC.2014.7008920
State	Published - Jan 13 2015
Event	2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014 - Kaohsiung, Taiwan, Province of China Duration: Nov 10 2014 → Nov 12 2014

Publication series

Name	2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers

Conference

Conference	2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014
Country/Territory	Taiwan, Province of China
City	Kaohsiung
Period	11/10/14 → 11/12/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Publisher link

10.1109/ASSCC.2014.7008920

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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). Article 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

A 0.4V 280-nW frequency reference-less nearly all-digital hybrid domain temperature sensor. / Zhao, Wenfeng; Pan, Rui; Ha, Yajun et al.
2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2015. p. 301-304 7008920 (2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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., 7008920, 2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers, Institute of Electrical and Electronics Engineers Inc., pp. 301-304, 2014 10th IEEE Asian Solid-State Circuits Conference, A-SSCC 2014, Kaohsiung, Taiwan, Province of China, 11/10/14. https://doi.org/10.1109/ASSCC.2014.7008920

Zhao W, Pan R, Ha Y, Yang Z. 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. Institute of Electrical and Electronics Engineers Inc. 2015. p. 301-304. 7008920. (2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers). doi: 10.1109/ASSCC.2014.7008920

Zhao, Wenfeng ; Pan, Rui ; Ha, Yajun et al. / A 0.4V 280-nW frequency reference-less nearly all-digital hybrid domain temperature sensor. 2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 301-304 (2014 IEEE Asian Solid-State Circuits Conference, A-SSCC - Proceedings of Technical Papers).

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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.",

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AB - 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.

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

Abstract

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