Systematic Design of CMOS Switched-Current Bandpass Sigma-Delta Modulators for Digital Communication Chips
Systematic Design of CMOS Switched-Current Bandpass Sigma-Delta Modulators for Digital Communication Chips discusses architectures, circuits and procedures for the optimum design of bandpass sigma-delta (SD) A/D interfaces for mixed-signal chips in standa
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Systematic Design of CMOS Switched-Current Bandpass Sigma-Delta Modulators for Digital Communication Chips by
José M. de la Rosa University of Seville, Spain
Belén Pérez-Verdú University of Seville, Spain
and
Angel Rodríguez-Vázquez University of Seville, Spain
KLUWER ACADEMIC PUBLISHERS NEW YORK, BOSTON, DORDRECHT, LONDON, MOSCOW
eBook ISBN: Print ISBN:
0-306-48194-4 0-7923-7678-1
©2004 Kluwer Academic Publishers New York, Boston, Dordrecht, London, Moscow Print ©2002 Kluwer Academic Publishers Dordrecht All rights reserved
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Contents
List of Figures
xiii
List of Tables
xxiv
Preface
xxv
Acknowledgments
xxvii
Prologue
xxix
Chapter 1: Bandpass Sigma-Delta A/D Converters – Fundamentals and State-of-the-Art 1.1 Introduction 1.2 Analog-to-digital interfaces for digital radio receivers 1.3 Analog-to-Digital Conversion: Fundamentals 1.3.1 Sampling 1.3.2 Quantization
1.4 Oversampling
6 8
Analog-to-Digital Converters
1.4.1 Basic architecture of a modulator 1.4.2 Figures of merit 1.4.2.1 Signal-to-noise ratio 1.4.2.2 Dynamic range and effective resolution 1.4.3 First-order lowpass modulator 1.4.4 Lowpass modulator architectures 1.4.5 Second-order lowpass Modulator 1.4.6 High-order lowpass modulators 1.4.7 Multi-bit lowpass modulators
1.5 Bandpass
1 2 5
11 13 13 13 14 16 17 18 22
23
modulators
1.5.1 Quantization noise shaping of bandpass 1.5.2 Signal passband location
1.6 Synthesis of bandpass
10
modulators
modulator architectures
1.6.1 The Lowpass-to-bandpass transformation method 1.6.1.1 Pattern noise of second-order bandpass 1.6.2 Other lowpass-to-bandpass transformations
modulators
25 28
30 30 33 35
viii
36
1.6.3 Optimized synthesis of 1.6.4 Quadrature bandpass modulators 1.6.5 N-path bandpass modulators 1.6.6 Continuous-time bandpass modulators
1.7 Decimation for bandpass 1.8 State-of-the-art bandpass
37 41 43
46 48
ADCs ADCs
Chapter 2: Switched-Current Building Blocks for
Modulators
2.1 Introduction 2.2 Principle of Operation: The Current Memory Cell 2.3 SI Integrators 2.3.1 Review of discrete-time integrators 2.3.2 SI delay elements 2.3.3 SI non-inverting integrators 2.3.4 SI inverting integrators 2.3.5 Generalized SI integrators
2.4 SI Differentiators 2.4.1 Discrete-time differentiators 2.4.2 Inverting SI differentiators 2.4.3 Non-inverting SI differentiators 2.4.4 Bilinear SI differentiators
2.5 SI Resonators 2.5.1 Biquad filter background 2.5.2 Discrete-time resonators 2.5.2.1 Resonator structures based on differentiators and integrators 2.5.2.2 Delay element based resonators 2.5.3 SI Resonators 2.5.3.1 SI LDI loop resonators 2.5.3.2 SI FE loop resonators 2.5.3.3 SI delay l
