A sub 1V CMOS bandgap reference with two diodes

Hyung Jin Choi, Jeong Cho, Soo-Won Kim

Research output: Contribution to journalArticle

Abstract

A small size, sub 1V CMOS bandgap voltage reference with the temperature coefficient (TC) of 12ppm/°C from 0°C to 100°C is presented in this paper. The proposed circuit offers several performance advantages over previous bandgap voltage reference circuits. Compared to a conventional structure, it achieves a smaller area by using only two diodes. Also, it can fulfil sub 1V reference voltage by using temperature coefficient of threshold voltage to generate a current proportional to absolute temperature. This is because TC of this current on proposed circuit is bigger than that of conventional structure. Detailed analysis of the proposed bandgap reference is provided, which is simulated using 0.35μm CMOS process. The proposed bandgap reference occupies an active area of 0.0067mm2. The simulation results are the voltage reference output voltage of 0.843V and an accuracy of ±0.08%.

Original languageEnglish
Article number12004
JournalMATEC Web of Conferences
Volume54
DOIs
Publication statusPublished - 2016 Apr 22

ASJC Scopus subject areas

  • Chemistry(all)
  • Engineering(all)
  • Materials Science(all)

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