An energy efficient time-domain temperature sensor for low-power on-chip thermal management

Young Jae An, Kyungho Ryu, Dong Hoon Jung, Seung Han Woo, Seong Ook Jung

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Because temperature variations significantly affect the performance and reliability of highly integrated chips, the thermal management of such chips is an important issue. In this paper, a time-domain process variation calibrated temperature sensor is proposed for on-chip thermal management. For a suitable on-chip implementation, the digitally converted temperature-dependent time signal is used to reduce the area and power consumption of the chip. The proposed temperature sensor is fabricated using a 0.13-μm CMOS technology and has an active area of 0.031mm2. Measurement results show an energy consumption of 0.67 nJ/conversion at a 430 kHz conversion rate, with 1.2 V supply voltage. Using one-point calibration, the sensing error is found to range from -0.63°C to 1.04°C over a temperature range of 20°C to 120°C.

Original languageEnglish
Article number6589949
Pages (from-to)104-110
Number of pages7
JournalIEEE Sensors Journal
Volume14
Issue number1
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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