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Last Updated: 20070405, mei Sunday, May 6, 13:00 — 15:30W9 - THE HOWS AND WHYS OF SIGMA DELTA CONVERTERS Chair: Joshua Reiss, Queen Mary, University of London - London, UK Panelists: Jamie Angus, University of Salford - Salford, Greater Manchester, UK Lars Risbo, Texas Instruments, Denmark - Lyngby, Denmark Brian Trotter, Cirrus Logic, Inc. - Austin, TX, USA Abstract: Sigma delta modulation is the most popular form of analog-to-digital conversion used in audio applications. They are also commonly used in D/A converters, sample rate converters, and digital power amplifiers. This workshop will discuss methods of operation, design, and use of sigma delta modulators. The theory behind their operation will be introduced and explained. We will discuss the issues with their use and how they can be resolved. We’ll explain how their performance is assessed and how best to navigate through the specifications on a sigma delta modulator’s data sheet. Finally, practical examples will be given to illustrate the concepts presented. |