• JSSC2921450

    Accepted author manuscript, 2 MB, PDF-document


This paper describes a compact resistor-based temperature sensor that has been realized in a 180-nm CMOS process. It occupies only 6800 μ m2, thanks to the use of a highly digital voltage-controlled oscillator (VCO)-based phase-domain sigma-delta modulator, whose loop filter consists of a compact digital counter. Despite its small size, the sensor achieves ±0.35 °C (3 σ) inaccuracy from-35 °C to 125 °C. Furthermore, it achieves 0.12 °C (1 σ) resolution at 2.8 kSa/s, which is mainly limited by the time-domain quantization imposed by the counter.

Original languageEnglish
Article number8753607
Pages (from-to)2649-2657
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Issue number10
Publication statusPublished - 2019

    Research areas

  • CMOS temperature sensor, phase-to-digital converter, thermal sensing, voltage-controlled oscillator (VCO)-based phase-domain sigma-delta modulator (PDΣΔM), Wien bridge (WB)

ID: 57481444