Ultra-Miniature 0.003 mm2 PNP-Based Thermal Sensor for CPU Thermal Monitoring

Ori Bass, Joseph Shor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Miniaturized, integrated thermal sensors are utilized to measure hot and cold spots in CPU's in multiple locations and are critical for the power/performance of the chip. In this paper we report an ultra-miniature, 0.003 mm2, PNP thermal sensor in TSMC 65nm. The sensor utilizes a novel switched-capacitor bandgap reference and a single bit sigma-delta modulator to achieve a maximum error of ±1.35°C and a resolution of 130mK for a 12 bit, 4ms conversion. The sensor is the smallest reported BJT bandgap-based sensor, especially when considering the process node, and one of the smallest in all mechanisms. It has a competitive accuracy and resolution compared to compact bandgap-based sensors which can meet the CPU area specifications (< 0.02 mm2).

Original languageEnglish
Title of host publicationESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages110-113
Number of pages4
ISBN (Electronic)9781538654040
DOIs
StatePublished - 16 Oct 2018
Event44th IEEE European Solid State Circuits Conference, ESSCIRC 2018 - Dresden, Germany
Duration: 3 Sep 20186 Sep 2018

Publication series

NameESSCIRC 2018 - IEEE 44th European Solid State Circuits Conference

Conference

Conference44th IEEE European Solid State Circuits Conference, ESSCIRC 2018
Country/TerritoryGermany
CityDresden
Period3/09/186/09/18

Keywords

  • Analog
  • Hotspot
  • Microprocessors
  • Thermal Management
  • Thermal Sensor

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Instrumentation

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