CMOS Digital to Analog converters for telecommunication applications

keroppi

共132頁  個人覺得對ADC與DAC的基本原理描述得很清楚  是還不錯的參考資料


Table of Contents
CMOS
Digital-to-Analog Converters for
Telecommunication Applications
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Outline of the Thesis ................................................................................ 1
1.2 Papers and Conference Contributions ...................................................... 2
1.3 Nomenclature, Acronyms, and Abbreviations ......................................... 3
Part A:
Overview:
Digital-to-Analog Converter Design
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Research Background .............................................................................. 5
1.1.1 The DAC 5
1.1.2 The Telecommunication Situation 6
1.1.3 Higher-Level Design 8
1.2 Signals and Coding Schemes ................................................................... 9
1.2.1 Signal Definitions 9
1.2.2 Digital Numbers and Representation 10
1.3 xDSL Standards ..................................................................................... 12
1.4 The CMOS Transistor ............................................................................ 14
1.4.1 Operation Regions and Small Signal Characteristics 15
1.4.2 Parasitic Capacitors 16
1.5 Circuit Noise .......................................................................................... 17
2 The Ideal DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.1 Discrete-Time Properties ....................................................................... 19
2.2 Quantization and Discrete-Amplitude Properties .................................. 21
2.2.1 Quantization Types 21
2.2.2 Quantization Noise 22
3 DAC Performance Measures . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1 Static Measures ...................................................................................... 25
3.1.1 Differential Non-linearity, DNL 26
3.1.2 Offset Error 27
3.1.3 Gain Error 28
3.1.4 Integral Non-linearity, INL 28
3.1.5 Monotonicity 29
3.2 Dynamic Measures ................................................................................ 30
3.2.1 Glitch 30
3.2.2 Clock Feedthrough, CFT 32
3.2.3 Non-linear slewing 32
3.3 Frequency-Domain Measures ................................................................ 32
3.3.1 Signal-to-Noise Ratio, SNR 33
3.3.2 Harmonic Distortion, HDk 33
3.3.3 Total Harmonic Distortion, THD 33
3.3.4 Signal-to-Noise-and-Distortion Ratio, SNDR 33
3.3.5 Spurious-Free Dynamic Range, SFDR 34
3.3.6 Effective Number of Bits, ENOB 34
3.3.7 Inter-Modulation Distortion, IMD 34
3.3.8 Multi-Tone Power Ratio, MTPR 35
3.3.9 Peak-to-Average Ratio, PAR 35
3.4 DAC Comparison .................................................................................. 36
Part B:
Nyquist-Rate Digital-to-Analog
Converters for VDSL Applications
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2 Nyquist-Rate DAC Structures . . . . . . . . . . . . . . . . . . . . . . . 39
2.1 Charge-Redistribution DACs ................................................................ 39
2.2 Current-Steering DACs ......................................................................... 40
2.3 R-2R Ladder DACs ............................................................................... 41
2.4 Comparison ............................................................................................ 42
3 DAC Performance Modeling . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.1 Influence of Amplitude Level Uncertainties ......................................... 44
3.2 Influence of Output Impedance Variations ............................................ 45
3.3 Influence of Current Source Mismatch .................................................. 48
3.3.1 Deterministic Variations of the Mismatch 49
3.3.2 Stochastic Variations of the Mismatch 51
3.4 Influence of Circuit Noise ...................................................................... 54
3.5 Influence of Timing Uncertainties ......................................................... 57
4 A CMOS DAC Chipset
for VDSL Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.1 Practical Design Considerations ............................................................ 59
4.1.1 Unit Current Sources 60
4.1.2 Current Switches 63
4.1.3 Segmentation of the MSBs 66
4.1.4 Digital Circuits 67
4.2 Chip Implementation ............................................................................. 67
4.3 Simulation and Measurement Results .................................................... 69
4.3.1 Test Signal Generation 70
4.3.2 Measurement Results 72
4.3.3 Measurement Conclusions 73
5 Improvements of
the DAC Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
5.1 Digital Correction .................................................................................. 75
5.1.1 Intentional Pre-Distortion 75
5.1.2 Calibration and Trimming Techniques 77
5.2 Dithering ................................................................................................ 78
5.2.1 Randomization of Segmented Current Sources 78
Part C:
Oversampling Digital-to-Analog
Converters for ADSL Applications
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
2 Oversampling DAC
Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
2.1 Interpolation Filters ................................................................................ 84
2.2 Modulator ............................................................................................... 86
2.2.1 Signal Feedback Modulator 87
2.2.2 Error Feedback Modulator 89
2.2.3 Higher-Order Signal Feedback Modulators 90
2.3 Semi-Digital FIR Filter .......................................................................... 91
2.4 Analog Smoothing Filter ....................................................................... 92
2.5 Trade-Off Discussion ............................................................................ 93
3 A CMOS Oversampling
DAC for ADSL Applications . . . . . . . . . . . . . . . . . . . . . . . . 95
3.1 Practical Design Considerations ............................................................ 95
3.1.1 Interpolation Filters 95
3.1.2 Modulator 96
3.1.3 Semi-Digital FIR Filter 99
3.1.4 Analog Smoothing Filter 103
3.2 Simulation Results ............................................................................... 104
3.3 Chip Implementation ........................................................................... 107
3.4 Improvements of OSDAC Design ....................................................... 108
3.4.1 Interpolated FIR Filter 108
Conclusions
References

keroppi

剛剛忘記放檔案上去,   附件在這邊   FYI

erdong2000cn

是Jacob wikner的那本

rfic168

是ADI的那个教材吗?

eizor

好像不是，这本教材还是不错的，不过最后一部分对我来说没啥用

kuaiyu

学习一下~

topee2012A

Thank you very much.

muxl

是不错的书

ralphtwtw

CMOS Digital to Analog converters for telecommunication applications

newrfdesign

Thanks for sharing.