A 0.85V 600nW all-CMOS temperature sensor with an inaccuracy of ±0.4°C (3s) from -40 to 125°C

Kamran Souri, Youngcheol Chae, Frank Thus, Kofi Makinwa

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

54 Citations (Scopus)

Abstract

This paper describes an all-CMOS temperature sensor intended for RFID applications that achieves both sub-1V operation and high accuracy (±0.4°C) over a wide temperature range (-40 to 125°C). It is also an ultra-low-power design: drawing 700nA from a 0.85V supply. This is achieved by the use of dynamic threshold MOSTs (DTMOSTs) as temperature-sensing devices, which are then read out by an inverter-based 2nd-order zoom ADC. Circuit errors are mitigated by the use of dynamic error-correction techniques, while DTMOST spread is reduced by a single room temperature (RT) trim. The latter feature constitutes a significant advance over previous all-CMOS designs [5,6], which require two-point trimming to approach the same level of accuracy.

Original languageEnglish
Title of host publication2014 IEEE International Solid-State Circuits Conference, ISSCC 2014 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages222-223
Number of pages2
ISBN (Print)9781479909186
DOIs
Publication statusPublished - 2014
Event2014 61st IEEE International Solid-State Circuits Conference, ISSCC 2014 - San Francisco, CA, United States
Duration: 2014 Feb 92014 Feb 13

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume57
ISSN (Print)0193-6530

Other

Other2014 61st IEEE International Solid-State Circuits Conference, ISSCC 2014
CountryUnited States
CitySan Francisco, CA
Period14/2/914/2/13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Souri, K., Chae, Y., Thus, F., & Makinwa, K. (2014). A 0.85V 600nW all-CMOS temperature sensor with an inaccuracy of ±0.4°C (3s) from -40 to 125°C. In 2014 IEEE International Solid-State Circuits Conference, ISSCC 2014 - Digest of Technical Papers (pp. 222-223). [6757409] (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; Vol. 57). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISSCC.2014.6757409