All digital on-chip temperature sensor using dual ring oscillators

Jiwoong Jang, Jinse Kim, Reum Oh, Man Young Sung

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

4 Citations (Scopus)

Abstract

In this paper, an on-chip all digital temperature sensor using dual ring oscillators which have different gate channel length is proposed for maintaining the performance benefit of CMOS digital circuit. This novel temperature sensor measures the temperature variations between the temperature-sensitive ring-oscillator and the temperature-insensitive ring-oscillator according to temperature. The sensitivity of delay variations depends on the CMOS gate channel length. Output clock of the ring-oscillator which consists of the long gate channel length inverters is sensitive to temperature variation. In contrary, output clock of the ring-oscillator which consists of the short gate channel length inverters is insensitive to temperature variation. The difference between two clocks can be amplified using counters. Finally, it is possible to sense the temperature variation by using coarse-fine TDC(Time-to-Digital- Converter). The circuit was designed by 0.11μm 1P6M process. Effective resolution was 1.0°C from 0°C to 100°C and its chip area was only 0.043mm2 with 1μW power consumption at 1.2V operation voltage.

Original languageEnglish
Title of host publication2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages181-184
Number of pages4
ISBN (Print)9781479924523
DOIs
Publication statusPublished - 2013
Event2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013 - Abu Dhabi, United Arab Emirates
Duration: 2013 Dec 82013 Dec 11

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems

Other

Other2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
CountryUnited Arab Emirates
CityAbu Dhabi
Period13/12/813/12/11

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Jang, J., Kim, J., Oh, R., & Sung, M. Y. (2013). All digital on-chip temperature sensor using dual ring oscillators. In 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013 (pp. 181-184). [6815384] (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS.2013.6815384