A -80dB PSRR 1.166 ppm/°C bandgap voltage reference with improved high-order temperature compensation

Yifei Meng; Zhiming Xiao; Yadong Guo; Yue Zhao; Feng Luo

doi:10.1587/elex.20.20230278

This article has now been updated. Please use the final version.

A -80dB PSRR 1.166 ppm/°C bandgap voltage reference with improved high-order temperature compensation

Yifei Meng, Zhiming Xiao, Yadong Guo, Yue Zhao, Feng Luo

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Keywords: bandgap reference, temperature compensation, high PSRR

JOURNAL FREE ACCESS Advance online publication

Article ID: 20.20230278

DOI https://doi.org/10.1587/elex.20.20230278

The final version of this article is now available: Vol. 20 (2023), No. 16 pp. 20230278-20230278

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Abstract

A novel high precision and high PSRR bandgap voltage reference with improved high-order temperature compensation is proposed in this paper. An accurate curvature compensation topology is designed to compensate the reference voltage in the high and low temperature sections respectively. A pre-regular circuit is deployed to improve the PSRR and enlarge input voltage range. Implemented with TSMC 0.18um process, this design achieves an ultra-low temperature coefficient (TC) of 1.166ppm/°C from −40°C to 125°C with a high PSRR of -80dB at 1KHz.

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