A 5800-μm2 Resistor-Based Temperature Sensor with a One-Point Trimmed Inaccuracy of ±1.2 °c (3σ) from -50 °c to 105 °c in 65-nm CMOS

Yongtae Lee, Woojun Choi, Taewoong Kim, Seungwoo Song, Kofi A.A. Makinwa, Youngcheol Chae

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

This letter describes a compact resistor-based temperature sensor intended for the thermal monitoring of microprocessors and DRAMs. It consists of an RC poly phase filter (PPF) that is read out by a frequency-locked loop (FLL) based on a dual zero-crossing (ZC) detection scheme. The sensor,fabricated in 65-nm CMOS,occupies 5800 μm2 and achieves moderate accuracy [±1.2 °C (3σ)] over a wide temperature range (-50 °C to 105 °C) after a one-point trim. This is 2× better than the previous compact resistor-based sensors. Operating from 0.85 to 1.3-V supplies,it consumes 32.5-μA and achieves 2.8-mK resolution in a 1-ms conversion time,which corresponds to a resolution FoM of 0.26 pJ•K2.

Original languageEnglish
Title of host publicationESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages67-70
Number of pages4
ISBN (Electronic)9781728115504
DOIs
Publication statusPublished - 1 Sep 2019
Event45th IEEE European Solid State Circuits Conference, ESSCIRC 2019 - Cracow, Poland
Duration: 23 Sep 201926 Sep 2019

Publication series

NameIEEE Solid State Circuits Letters
PublisherIEEE
Number9
Volume2
ISSN (Electronic)2573-9603

Conference

Conference45th IEEE European Solid State Circuits Conference, ESSCIRC 2019
CountryPoland
CityCracow
Period23/09/1926/09/19

Keywords

  • CMOS temperature sensor
  • dual zero-crossing (ZC) detection
  • frequency-locked loop (FLL)
  • one-point trim
  • RC poly phase filter (PPF)
  • resistor-based temperature sensor.

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