[K-9] Advanced Device-based Circuits and Power Management Systems

[K-9-01] Wide temperature- and voltage-range temperature sensing utilizing statistical property of sub-threshold MOSFET current

〇Shinichi Ota¹, Mahfuzul Islam¹, Takashi Hisakado¹, Osami Wada¹ (1. Graduate School of Engineering, Kyoto Univ. (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.K-9-01

CMOS temperature sensors are attractive for their low-power operation. However, they suffer from narrow temperature range operation due to the complex relationship between the drain current and temperature. This paper proposes a CMOS based temperature sensor that utilizes the statistical properties of sub-threshold MOSFET current to suppress several error sources. The sensor operates under a supply voltage of 0.8 V to 1.2 V and achieves an error of −0.53/+0.43 ℃ across a range of −20 ℃ to 120 ℃ after a two-point calibration.