A 5800-μ m ₂Resistor-Based Temperature Sensor with a One-Point Trimmed Inaccuracy of ±1.2 °c (3σ) From-50 °c to 105 °c in 65-nm CMOS

A 5800-μ m ₂Resistor-Based Temperature Sensor with a One-Point Trimmed Inaccuracy of ±1.2 °c (3σ) From-50 °c to 105 °c in 65-nm CMOS

Lee, Yongtae (Yonsei University)
Choi, Woojun (Yonsei University)
Kim, Taewoong (Yonsei University)
Song, Seungwoo (Yonsei University)
Makinwa, K.A.A. (TU Delft Microelectronics)
Chae, Youngcheol (Yonsei University)

Microelectronics

2019

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 μ m2 and achieves moderate accuracy [±1.2 °C (3 σ)] over a wide temperature range (-50 °C to 105 °C) after a one-point trim. This is 2× better than the previous compact resistor-based sensors. Operating from 0.85 to 1.3-V supplies, it consumes 32.5-μ A and achieves 2.8-mK resolution in a 1-ms conversion time, which corresponds to a resolution FoM of 0.26 pJ K2.

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

http://resolver.tudelft.nl/uuid:45f74cc8-b9d6-4024-a94a-ad9ab49f4f81

https://doi.org/10.1109/LSSC.2019.2937441

2022-03-25

0018-9200

IEEE Journal of Solid State Circuits, 2 (9), 67 - 70

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2019 Yongtae Lee, Woojun Choi, Taewoong Kim, Seungwoo Song, K.A.A. Makinwa, Youngcheol Chae