• LSSC2937441

    Accepted author manuscript, 1 MB, PDF-document


  • Yongtae Lee
  • Woojun Choi
  • Taewoong Kim
  • Seungwoo Song
  • Kofi Makinwa
  • Youngcheol Chae
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 μm 2 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 2x 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·K 2 .
Original languageEnglish
Pages (from-to)67 - 70
Number of pages4
JournalIEEE Journal of Solid State Circuits
Issue number9
Publication statusPublished - 2019

    Research areas

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

ID: 67076502