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CMOS Sigma-Delta Converters:Practical Design Guide

Cover Image Copyright Year: 2013
Author(s): de la Rosa, J.; del R?o, R.
Publisher: Wiley-IEEE Press
Content Type : Books & eBooks
Topics: Components, Circuits, Devices & Systems ;  Engineered Materials, Dielectrics & Plasmas ;  Fields, Waves & Electromagnetics
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Abstract

This book offers a timely practical design guide and comprehensive description of Sigma-Delta Modulators (Σ∆Ms). With emphasis on the most important design issues and the multiple trade-offs involved in the whole design flow from specifications to chip implementation and characterization, it compiles the enormous number of technical and research works reported to date on the topic of Σ∆Ms, and presents the results of such a compilation in a didactical, pedagogical, and intuitive style. Various design methodologies and practical considerations are described with a top-down approach, presenting from theoretical fundamentals, system-level design equations and behavioral models in MATLAB/SIMULINK, to circuit, transistor-level realization in Cadence Design FrameWork II, and physical implementation, chip prototyping and experimental characterization.Other key features: 
a comprehensive and systematic description of Σ∆M architectures from the basic operating principles to state-of-the-art advances in architectures and circuits, and considering both switched-capacitor and continuous-time circuit implementations
a detailed review of state-of-the-art Σ∆M ICs, extracting statistical and empirical design guidelines, identifying trends, design challenges and solutions
case studies showing the different stages of the design flow of Σ∆Ms
a complete description of SIMSIDES (SIMulink Sigma-Delta Simulator), a time-domain behavioral simulator for the high-level sizing and verification of Σ∆Ms, implemented in MATLAB/SIMULINK
a number of electronic resources (available through a companion website) including practical examples using SIMSIDES, the statistical data used in the state-of-the-art survey, as well as many design examples and simulation test benchesUsing a pedagogical and intuitive approach, this is an essential guide for designers of mixed-signal circuits in nanometer CMOS. It doubly serves as a self-contained reference for researchers, designers and non-experienced engineers wanting to acquire an insight into Σ∆Ms and for undergraduate and graduate students in electronics engineering.

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      Front Matter

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.fmatter
      Page(s): i - xxviii
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      The prelims comprise:
      Half-Title Page
      Title Page
      Copyright Page
      Dedication Page
      Table of Contents
      List of Abbreviations
      Preface
      Acknowledgements View full abstract»

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      Introduction to Modulators: Basic Concepts and Fundamentals

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.ch1
      Page(s): 1 - 53
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This chapter is conceived as an introduction to CMOS Sigma-Delta () analog-to-digital converters (ADCs). Their operation principle consists in combining oversampling, quantization error processing, and negative feedback for improving the effective resolution of a coarse quantizer. Before presenting practical topologies for the implementation of modulation, the large variety of the existing realizations is briefly classified according to the type of modulator architecture (single loops or cascades), the circuit techniques employed (discrete time (DT) or continuous-time (CT)), and the nature of the signals being converted (low pass (LP) or band pass (BP)). Starting from the case of DT, LP, single-bit modulators, the implications of these different alternatives are then presented in an incremental way. View full abstract»

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      Circuits and Errors: Systematic Analysis and Practical Design Issues

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.ch2
      Page(s): 54 - 109
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This chapter analyzes the main nonideal mechanisms affecting the performance of both switched-capacitor (SC) and continuous-time (CT) modulators implemented in CMOS process. The first part of the chapter is devoted to circuit errors with large influence on the behavior of SC-Ms, such as integrator leakage, capacitor mismatch, settling errors, and kT/C noise. The second part of the chapter covers the dominant circuit errors in CT-Ms, especially clock jitter, excess loop delay, and time-constant errors. The main sources of distortion in both types of Ms are also discussed. System-level considerations, behavioral models, and closed-form expressions are obtained for the influence of each nonideality. From them, estimable guidelines for the design of Ms can be extracted. These are put into practice in a case study at the end of the chapter. View full abstract»

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      Behavioral Modeling and High-Level Simulation

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.ch3
      Page(s): 110 - 185
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      The analysis of nonideal effects allows us to derive precise equivalent circuits and models for the different CMOS modulators building blocks. This chapter shows how these models can be used for improving the accuracy and computational efficiency of system-level simulations. It first describes the systematic top-down/bottom-up synthesis methodology commonly followed to design Ms. Then, it compares the different simulation approaches that can be used for the evaluation of Ms, emphasizing on the benefits of behavioral simulation techniques. Next, it focuses on the behavioral modeling technique, and shows an efficient way of implementing M block models in SIMULINK. Finally, the chapter presents SIMulink-based SIgma-DElta simulator (SIMSIDES), a time-domain behavioral simulator implemented in the MATLAB/SIMULINK environment that is based on the behavioral modeling techniques. Two case studies are described to illustrate the use of SIMSIDES for the high-level sizing and simulation of Ms. View full abstract»

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      Circuit-Level Design, Implementation, and Verification

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.ch4
      Page(s): 186 - 272
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This chapter gives some design issues and practical recipes to complete the design flow of modulator. It deals with macromodel implementation of Ms as an essential design stage to relate behavioral-level models with circuit-level description. Then, it describes how to include circuit noise in electrical-level simulations of Ms, and shows how to process the modulator output data extracted from electrical simulations in SPICE-like simulators, in order to characterize the performance of Ms. Next, the chapter moves down to the transistor-level implementation, giving a number of practical design guidelines and describing diverse simulation test benches to properly design and characterize the performance of basic building blocks (CMOS Switches, operational amplifiers, transconductors, comparators, and current-steering DACs). Other auxiliary circuits needed to implement Ms are also discussed. Finally, the chapter deals with some of the most important design issues related to the layout, prototyping, and testing of high-performance Ms. View full abstract»

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      Frontiers of Modulators: Trends and Challenges

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.ch5
      Page(s): 273 - 333
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This chapter gives an overview of reported cutting-edge modulator ICs fabricated in CMOS technologies. The main purpose of this overview is to make an exhaustive analysis of the evolution trends, design challenges, and reported solutions in order to extract practical conclusions and guidelines which may be useful for designers in their own projects. The chapter gives an overview of the state-of-the-art Ms, comparing their performance with Nyquist-rate ADCs. The diverse families of M architectures and circuit techniques are exhaustively analyzed and compared in order to extract practical and empirical design guidelines. Then, it reviews some of the most significant cutting-edge M techniques, analyzing the design trends and challenges in the frontiers of Ms. The chapter concludes with a classified description of state-of-the-art references. View full abstract»

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      A: SIMSIDES User Guide

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.app1
      Page(s): 334 - 354
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This appendix contains sections titled:
      Getting Started: Installing and Running SIMSIDES
      Building and Editing M Architectures in SIMSIDES
      Analyzing Ms in SIMSIDES
      Example
      Getting Help View full abstract»

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      B: SIMSIDES Block Libraries and Models

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.app2
      Page(s): 355 - 388
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      This appendix contains sections titled:
      Overview of SIMSIDES Libraries
      Ideal Libraries
      Real SC Building-Block Libraries
      Real SI Building-Block Libraries
      Real CT Building-Block Libraries
      Real Quantizers and Comparators
      Real D/A Converters
      Auxiliary Blocks View full abstract»

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      Index

      de la Rosa, J. ; del R?o, R.
      CMOS Sigma-Delta Converters:Practical Design Guide

      DOI: 10.1002/9781118569238.index
      Page(s): 389 - 398
      Copyright Year: 2013

      Wiley-IEEE Press eBook Chapters

      No abstract. View full abstract»




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