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Continuous-Time Delta-Sigma Modulators for High-Speed A/D Conversion

Theory, Practice and Fundamental Performance Limits

  • Book
  • © 2002

Overview

Authors:
  1. James A. Cherry

    1. Philsar Electronics, Inc., USA

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    You can also search for this author in PubMed   Google Scholar

  2. W. Martin Snelgrove

    1. Philsar Electronics, Inc., USA

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    You can also search for this author in PubMed   Google Scholar

Part of the book series: The Springer International Series in Engineering and Computer Science (SECS, volume 521)

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Table of contents (8 chapters)

  1. Front Matter

    Pages i-xxx
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  2. Delta-Sigma Modulation Concepts

    Pages 1-28

  3. Designing Continuous-Time Modulators

    Pages 29-58

  4. Delta—Sigma Modulator Implementation Issues

    Pages 59-74

  5. Excess Loop Delay

    Pages 75-103

  6. Clock Jitter and Quantizer Metastability

    Pages 105-160

  7. A High-Speed Band Pass ΔΣM Design Procedure

    Pages 161-173

  8. A 4GHZ Fourth-Order Band Pass Δ ΣM

    Pages 175-228

  9. Conclusions

    Pages 229-232

  10. Back Matter

    Pages 233-248
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Keywords

About this book

Among analog-to-digital converters, the delta-sigma modulator has cornered the market on high to very high resolution converters at moderate speeds, with typical applications such as digital audio and instrumentation. Interest has recently increased in delta-sigma circuits built with a continuous-time loop filter rather than the more common switched-capacitor approach. Continuous-time delta-sigma modulators offer less noisy virtual ground nodes at the input, inherent protection against signal aliasing, and the potential to use a physical rather than an electrical integrator in the first stage for novel applications like accelerometers and magnetic flux sensors. More significantly, they relax settling time restrictions so that modulator clock rates can be raised. This opens the possibility of wideband (1 MHz or more) converters, possibly for use in radio applications at an intermediate frequency so that one or more stages of mixing might be done in the digital domain.
Continuous-Time Delta-Sigma Modulators for High-Speed A/D Conversion: Theory, Practice and Fundamental Performance Limits covers all aspects of continuous-time delta-sigma modulator design, with particular emphasis on design for high clock speeds. The authors explain the ideal design of such modulators in terms of the well-understood discrete-time modulator design problem and provide design examples in Matlab. They also cover commonly-encountered non-idealities in continuous-time modulators and how they degrade performance, plus a wealth of material on the main problems (feedback path delays, clock jitter, and quantizer metastability) in very high-speed designs and how to avoid them. They also give a concrete design procedure for a real high-speed circuit which illustrates the tradeoffs in the selection of key parameters. Detailed circuit diagrams, simulation results and test results for an integrated continuous-time 4 GHz band-pass modulator for A/D conversion of 1 GHz analog signals are also presented.
Continuous-Time Delta-Sigma Modulators for High-Speed A/D Conversion: Theory, Practice and Fundamental Performance Limits concludes with some promising modulator architectures and a list of the challenges that remain in this exciting field.

Authors and Affiliations

  • Philsar Electronics, Inc., USA

    James A. Cherry, W. Martin Snelgrove

Bibliographic Information

  • Book Title: Continuous-Time Delta-Sigma Modulators for High-Speed A/D Conversion

  • Book Subtitle: Theory, Practice and Fundamental Performance Limits

  • Authors: James A. Cherry, W. Martin Snelgrove

  • Series Title: The Springer International Series in Engineering and Computer Science

  • DOI: https://doi.org/10.1007/b117617

  • Publisher: Springer New York, NY

  • eBook Packages: Springer Book Archive

  • Copyright Information: Springer Science+Business Media New York 2002

  • Hardcover ISBN: 978-0-7923-8625-4Published: 30 September 1999

  • Softcover ISBN: 978-1-4757-8346-9Published: 26 April 2013

  • eBook ISBN: 978-0-306-47052-3Published: 18 April 2006

  • Series ISSN: 0893-3405

  • Edition Number: 1

  • Number of Pages: XXX, 250

  • Topics: Circuits and Systems, Electrical Engineering

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