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A 1.2-V 2.18-ppm/°C curvature-compensated CMOS bandgap reference

  • Yuxin Zhang
  • , Jinghu Li*
  • , Xinsheng Wang
  • , Zhicong Luo
  • , Yanfei Zhou
  • *Corresponding author for this work
  • School of Information Science and Engineering, Harbin Institute of Technology Weihai
  • Fujian Agriculture and Forestry University
  • Xiamen Eochip Seiconductor Co. Ltd.

Research output: Contribution to journalArticlepeer-review

Abstract

Ahigh-precision and low-temperature-coefficient bandgap volt- age reference is proposed in 0.11 μm CMOS process. A temperature piece- wise compensation circuit is added to a traditional bandgap reference to decrease the temperature coefficient (TC). The digital trimming technology has been used to solve the deviation of TC and output voltage resulting from process corner and mismatch. Simulation result shows that the bandgap reference achieves TC of 2.18 ppm/°C from -40°C to 125°C. Bandgap reference output voltage is 1.2 V with in the error of ±5 mV.

Original languageEnglish
JournalIEICE Electronics Express
Volume18
Issue number11
DOIs
StatePublished - 2021
Externally publishedYes

Keywords

  • And temperature coefficient
  • Bandgap voltage reference
  • Digital trimming
  • Temperature piecewise compensa- tion

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