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CMOS PLL Synthesizers: Analysis and Design - Keliu Shu, Edgar Sanchez-Sinencio

CMOS PLL Synthesizers: Analysis and Design (eBook)

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2006 | 2005
XVI, 216 Seiten
Springer US (Verlag)
978-0-387-23669-8 (ISBN)
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Thanks to the advance of semiconductor and communication technology, the wireless communication market has been booming in the last two decades. It evolved from simple pagers to emerging third-generation (3G) cellular phones. In the meanwhile, broadband communication market has also gained a rapid growth. As the market always demands hi- performance and low-cost products, circuit designers are seeking hi- integration communication devices in cheap CMOS technology. The phase-locked loop frequency synthesizer is a critical component in communication devices. It works as a local oscillator for frequency translation and channel selection in wireless transceivers and broadband cable tuners. It also plays an important role as the clock synthesizer for data converters in the analog-and-digital signal interface. This book covers the design and analysis of PLL synthesizers. It includes both fundamentals and a review of the state-of-the-art techniques. The transient analysis of the third-order charge-pump PLL reveals its locking behavior accurately. The behavioral-level simulation of PLL further clarifies its stability limit. Design examples are given to clearly illustrate the design procedure of PLL synthesizers. A complete derivation of reference spurs in the charge-pump PLL is also presented in this book. The in-depth investigation of the digital CA modulator for fractional-N synthesizers provides insightful design guidelines for this important block.
Thanks to the advance of semiconductor and communication technology, the wireless communication market has been booming in the last two decades. It evolved from simple pagers to emerging third-generation (3G) cellular phones. In the meanwhile, broadband communication market has also gained a rapid growth. As the market always demands hi- performance and low-cost products, circuit designers are seeking hi- integration communication devices in cheap CMOS technology. The phase-locked loop frequency synthesizer is a critical component in communication devices. It works as a local oscillator for frequency translation and channel selection in wireless transceivers and broadband cable tuners. It also plays an important role as the clock synthesizer for data converters in the analog-and-digital signal interface. This book covers the design and analysis of PLL synthesizers. It includes both fundamentals and a review of the state-of-the-art techniques. The transient analysis of the third-order charge-pump PLL reveals its locking behavior accurately. The behavioral-level simulation of PLL further clarifies its stability limit. Design examples are given to clearly illustrate the design procedure of PLL synthesizers. A complete derivation of reference spurs in the charge-pump PLL is also presented in this book. The in-depth investigation of the digital CA modulator for fractional-N synthesizers provides insightful design guidelines for this important block.

Contents 6
List of Acronyms and Symbols 10
Preface 16
Chapter 1 INTRODUCTION 18
1.1 Motivation 18
1.2 Summary of book 19
1.3 Book organization 21
REFERENCES 22
Chapter 2 FREQUENCY SYNTHESIZER FOR WIRELESS APPLICATIONS 24
2.1 Definition and characteristics 24
2.2 Phase noise and timing jitter 25
2.2.1 Phase noise and spurious tone 25
2.2.2 Timing jitter 28
2.3 Implementations of frequency synthesizer 31
2.3.1 Direct analog frequency synthesizer 31
2.3.2 Direct digital frequency synthesizer 32
2.3.3 PLL-based frequency synthesizer 33
2.3.4 DLL-based frequency synthesizer 37
2.3.5 Hybrid frequency synthesizer 38
2.3.6 Summary and comparison of synthesizers 38
2.4 Frequency synthesizer for wireless transceivers 39
2.5 Other applications of PLL and frequency synthesizer 41
REFERENCES 43
Chapter 3 PLL FREQUENCY SYNTHESIZER 47
3.1 PLL frequency synthesizer basics 47
3.1.1 Basic building blocks of charge-pump PLL 47
3.1.2 Continuous-time linear phase analysis 50
3.1.3 Locking time 60
3.1.4 Tracking and acquisition 72
3.2 Fast-locking techniques 74
3.2.1 Bandwidth gear-shifting 74
3.2.2 VCO pre-tuning 76
3.3 Discrete-time analysis and nonlinear modeling 76
3.3.1 z-domain transfer function and stability analysis 76
3.3.2 Nonlinear dynamic behavior modeling 78
3.4 Design example: 2.4GHz integer-N PLL for Bluetooth 78
REFERENCES 81
Chapter 4 S. FRACTIONAL-N PLL SYNTHESIZER 85
4.1 S. fractional-N frequency synthesizer 85
4.1.1 S. quantization noise to phase noise mapping 86
4.1.2 S. quantization noise to timing jitter mapping 89
4.2 A Comparative study of digital S. modulators 89
4.2.1 Design considerations 89
4.2.2 Four types of digital S. modulators 90
4.2.3 Summary of comparative study 103
4.3 Other applications of S.-PLL 106
4.3.1 Direct digital modulation 106
4.3.2 Frequency-to-digital conversion 107
4.4 Modeling and simulation of S.-PLL 108
4.5 Design example: 900MHz S.-PLL for GSM 111
REFERENCES 114
Chapter 5 ENHANCED PHASE SWITCHING PRESCALER 118
5.1 Prescaler architecture 118
5.1.1 Conventional prescaler 118
5.1.2 Phase switching prescaler 120
5.1.3 Injection-locked prescaler 122
5.1.4 Summary and comparison of prescalers 122
5.2 Enhanced phase-switching prescaler 123
5.3 Circuit design and simulation results 125
5.3.1 Eight 45O-spaced phases generation 125
5.3.2 8-to-1 multiplexer 126
5.3.3 Switching control circuit 127
5.3.4 Asynchronous frequency divider 128
5.4 Delay budget in the switching control loop 130
5.5 Spurs due to nonidea14S0 phase spacing 132
REFERENCES 138
Chapter 6 LOOP FILTER WITH CAPACITANCE MULTIPLIER 141
6.1 Loop filter architecture 141
6.1.1 Passive loop filter 141
6.1.2 Dual-path loop filter 142
6.1.3 Sample-reset loop filter 145
6.1.4 Other loop filter architectures 147
6.1.5 Summary and comparison of loop filters 151
6.2 Loop filter and charge-pump noise mapping 152
6.3 Loop filter with capacitance multiplier 155
6.3.1 Third-order passive loop filter 155
6.3.2 Capacitance multiplier 156
6.3.3 Simulation of loop filter with capacitance multiplier 159
6.3.4 Noise consideration 162
REFERENCES 163
Chapter 7 OTHER BUILDING BLOCKS OF PLL 165
7.1 VCO 165
7.1.1 LC-VCO 165
7.1.2 Varactor 166
7.1.3 Inductor 169
7.1.4 VCO phase noise 170
7.1.5 Layout 175
7.2 Phase-frequency detector 176
7.3 Charge pump 178
7.3.1 Reference spur 178
7.3.2 Charge pump architectures 185
7.4 Programmable divider 187
7.5 Digital S. modulator 190
7.6 Chip layout 190
REFERENCES 192
Chapter 8 PROTOTYPE MEASUREMENT RESULTS 197
8.1 Prescaler measurement 197
8.2 Loop filter measurement 200
8.3 PLL measurement 202
REFERENCES 208
Chapter 9 CONCLUSIONS 209
APPENDIX --- Behavioral Modeling of Charge-pump PLL 212
Index 225

Erscheint lt. Verlag 20.1.2006
Reihe/Serie The Springer International Series in Engineering and Computer Science
The Springer International Series in Engineering and Computer Science
Zusatzinfo XVI, 216 p. 85 illus.
Verlagsort New York
Sprache englisch
Themenwelt Mathematik / Informatik Informatik
Technik Elektrotechnik / Energietechnik
Schlagworte CMOS • Filter • fractional-N synthesizer • loop capacitance multiplier • Phase • phase-switching prescaler • pll • sigma-delta modulator
ISBN-10 0-387-23669-4 / 0387236694
ISBN-13 978-0-387-23669-8 / 9780387236698
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