A 3.5 ppm/°C 0.85V bandgap reference circuit without resistors

Jing Wang, Qiang Li, Li Ding, Hirofumi Shinohara, Yasuaki Inoue

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A CMOS bandgap reference circuit without resistors, which can successfully operate under 1V supply voltage is proposed. The improvement is realized by the technique of the voltage divider and a new current source. The most attractive merit is that the proposed circuit breaks the bottleneck of low supply voltage design caused by the constant bandgap voltage value (1.25 V). Moreover, the temperature coefficient of the reference voltage Vref is improved by compensating the temperature dependence caused by the current source. The simulation results using a standard CMOS 0.18 um process show that the value of Vref can be achieved around 0.5 V with a minimum supply voltage of 0.85 V. Meanwhile, the temperature coefficient of the output voltage is only 3.5 ppm/°C from 0 °C to 70 °C.

Original languageEnglish
Pages (from-to)1430-1437
Number of pages8
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE99A
Issue number7
DOIs
Publication statusPublished - 2016 Jul 1

Keywords

  • Analog
  • Bandgap reference
  • Sub-1-V
  • Supplyinsensitive
  • Voltage reference

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics
  • Electrical and Electronic Engineering

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