Degree Type

Thesis

Date of Award

2019

Degree Name

Master of Science

Department

Electrical and Computer Engineering

Major

Electrical Engineering

First Advisor

Degang Chen

Abstract

The maximum achievable performance of almost all mixed-signal and radio frequency systems is dependent on the accuracy of voltage references. The bandgap voltage of silicon at zero Kelvin, VGO is a physical constant with unit Volts. It is independent of process, supply voltage and temperature variations.

This work proposes a strategy for extracting VGO and expressing it at the output of a voltage reference circuit. The concept is implemented in UMC 65nm process and the simulation results indicate that the circuit design can achieve very low temperature coefficients (<1ppm/°C). The proposed concept is validated using measurements and the associated constraints are carefully investigated. The measured output voltage reference of the two tested units record a temperature coefficient of 3.4ppm/°C and 4.57ppm/°C across the industrial temperature range (-40°C to 85°C).

Copyright Owner

Vijayalakshmi Naganadhan

Language

en

File Format

application/pdf

File Size

83 pages

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