Aim
This course deals with the theory and design of advanced mixed-signal circuits, in particular AD/DA converters built around Delta-Sigma modulators. Both discrete-time and continuous-time Delta-Sigma modulators will be treated in depth.

Knowledge and understanding
For a passing grade the student must

• be able to describe the fundamental theory behind Delta-Sigma AD/DA converters

• be able to describe the main specifications in the design of Delta-Sigma AD/DA converters

• be able to describe the various implementations of Delta-Sigma modulators, with main advantages and disadvantages

• be able to describe the critical components and sub-blocks in Delta-Sigma modulators and their implementation in CMOS processes, as well as the limiting factor for modulators performance

Skills and abilities
For a passing grade the student must

• be able to apply the knowledge acquired in the course to design a Delta-Sigma A/D or D/A converter suitable for a practical application

• together with a fellow student, be able to simulate and layout the Delta-Sigma converter

Judgement and approach
For a passing grade the student must

be able to contribute sufficient fundamental concepts and knowledge so that a competent person in this area can document the idea, the problem and the solutions

Contents
Basic A/D- and D/A converters; basic Delta-Sigma A/D- and D/A converters; first-order and second-order Delta-Sigma modulators; higher-order Delta-Sigma modulators; continuous-time modulators; decimation filters; design of Delta-Sigma converters on silicon; test and measurements of A/D- and D/A converters; state-of-the-art in the design and performance of CMOS Delta-Sigma converters

Literature
Maloberti F: Data Converters. ISBN-10: 0387324852, ISBN-13: 978-0387324852.
Schreier R, Temes G C: Understanding Delta-Sigma Data Converters, ISBN: 0-471-46585-2.