A Bandgap Voltage Reference Circuit with Calibration Technique of Process Variation

  • 楊 巧涵

Student thesis: Doctoral Thesis

Abstract

In this study we present two high precision bandgap voltage reference (BGR) circuits with calibration technique of process variation The calibration technique of first order compensation by four switches using to control the different resistance values of resistors in the first proposed circuit Moreover we also present a new compensation circuit in the second proposed circuit which can automatic calibrate the reference voltage of BGR circuit when BJTs and MOSFETs operate in TT corner and Resistors operate in any kind of process corners The measurement results of BGR with calibration technique of resistance trimming show that the best temperature coefficient is 5 35 ppm/?C at temperature from 0 ?C to 120 ?C the quiescent current consumption is 41 6 μA with a power supply of 1 8 V Furthermore the measurement results of BGR with calibration technique of resistance process variation show that the best temperature coefficient is 12 22 ppm/?C at temperature from 0?C to 120?C the average quiescent current consumption is 58 3 μA with a power supply of 1 8 V Total active area of chip is 1 22 mm2
Date of Award2019
Original languageEnglish
SupervisorShuenn-Yuh Lee (Supervisor)

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