Top-Down Design of High-Performance Sigma-Delta Modulators / Edition 1

by Fernando Medeiro, Belïn Pïrez Verdï, Angel Rodrïguez-Vïzquez

Overview

The interest for :I:~ modulation-based NO converters has significantly increased in the last years. The reason for that is twofold. On the one hand, unlike other converters that need accurate building blocks to obtain high res­ olution, :I:~ converters show low sensitivity to the imperfections of their building blocks. This is achieved through extensive use of digital signal processing - a desirable feature regarding the implementation of NO interfaces in mainstream CMOS technologies which are better suited for implementing fast, dense, digital circuits than accurate analog circuits. On the other hand, the number of applications with industrial interest has also grown. In fact, starting from the earliest in the audio band, today we can find :I:~ converters in a large variety of NO interfaces, ranging from instrumentation to communications. These advances have been supported by a number of research works that have lead to a considerably large amount of published papers and books cov­ ering different sub-topics: from purely theoretical aspects to architecture and circuit optimization. However, so much material is often difficultly digested by those unexperienced designers who have been committed to developing a :I:~ converter, mainly because there is a lack of methodology. In our view, a clear methodology is necessary in :I:~ modulator design because all related tasks are rather hard.

Product Details

ISBN-13:	9781441950673
Publisher:	Springer US
Publication date:	12/07/2010
Series:	The Springer International Series in Engineering and Computer Science , #480
Edition description:	Softcover reprint of 1st ed. 1999
Pages:	287
Product dimensions:	6.10(w) x 9.25(h) x 0.03(d)

Table of Contents

1 Introduction.- 2 OVERSAMPLING SIGMA-DELTA A/D CONVERTERS: Basic concepts and state of the art.- 3 Modeling of Error Mechanisms in Sigma-Delta Modulators.- 4 Behavioral Simulation of Sigma-Delta Modulators.- 5 Sdopt+Fridge: Tools for the automatic design of Sigma-Delta modulators.- 6 Integrated Circuit Design (I): A 17-bit 40kSample/s fourth-order cascade Sigma-Delta modulator.- 7 Integrated Circuit Design (II): A 13-bit 2.2MSample/s fourth-order cascade multi-bit Sigma-Delta modulator.- References.- Appendix: Time-domain analysis of low-order—? modulators.- A.1 Introduction.- A.2 First-Order Modulator.- A.3 Second-Order Modulator.

Editorial Reviews

The modulators, basic components for analog/digital converters, have been garnering attention in the past few years because they have less sensitivity to imperfections in their building blocks than other types, and because the applications for them have grown from audio devices to include a wide range of instrument and communication contexts. The three authors, all from the University of Seville, Spain, present the basic knowledge for designing and characterizing the modulators, but also offer a systematic methodology, supported by dedicated computer-aided-design tools, which allows designers to achieve a given set of specifications in very short design cycles. They assume readers to be engineers with a background in analog but no previous experience with sigma-delta modulators. Annotation c. Book News, Inc., Portland, OR (booknews.com)

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