This book fits in the quest for highly efficient fully integrated xDSL modems for central office applications. It presents a summary of research at one of Europe’s most famous analog design research groups over a five year period. The book focuses on the line driver, the most demanding building block of the xDSL modem for lowering power. The book covers the total design flow of monolithic CMOS high voltage circuits. It is essential reading for analog design engineers.
Author(s): Bert Serneels, Michiel Steyaert
Edition: 1
Year: 2008
Language: English
Pages: 200
1402067895......Page 1
Contents......Page 12
Preface......Page 6
List of Abbreviations and Symbols......Page 8
1. Introduction......Page 15
1.1 Motivation of the Work......Page 17
1.1.2 xDSL Technologies: The Gap......Page 18
1.1.3 Power or High Voltage in Nanometer CMOS?......Page 19
1.2 Organisation of the Book......Page 21
2. Digital Subscriber Line: Signals, Specifications and Driver Solutions......Page 24
2.1.1 History......Page 25
2.1.2 How it Works......Page 26
2.1.3 Continuing Developments in DSL......Page 27
2.2.1 Cable Technology......Page 29
2.2.2 Twisted Pair Cable Modeling......Page 30
2.2.3 Cable Impairments......Page 33
2.3.2 DMT Modulation......Page 34
2.3.3 DMT Specifications......Page 37
2.4.1 Line Driver Requirements......Page 39
2.4.2 Class AB......Page 40
2.4.3 Class G/H......Page 42
2.4.4 Class D......Page 44
2.4.5 Class K and Other Combined Structures......Page 46
2.5 Conclusions......Page 47
3.1.1 Nonlinear Systems......Page 49
3.1.2 The Describing Function Viewpoint......Page 50
3.2.1 Reference Model......Page 52
3.2.2 Limit Cycle Oscillation......Page 54
3.2.3 The Coupled System......Page 55
3.2.4 The Forced System......Page 58
3.2.5 Higher Order SOPA Amplifiers......Page 66
3.3 High Voltage SOPA Amplifiers......Page 67
3.4 Conclusions......Page 71
4. High Voltage Design Considerations......Page 72
4.1.2 CMOS Scaling Laws......Page 73
4.1.3 Influence of CMOS Scaling on Switching Amplifiers......Page 75
4.1.4 Influence of CMOS Scaling on SOPA Design......Page 78
4.1.5 Reliability Issues......Page 81
4.1.6 Customized Silicon Technologies......Page 86
4.2.1 Introduction......Page 88
4.2.2 Power Dissipation......Page 91
4.3 Conclusions......Page 101
5.1.1 Introduction......Page 102
5.1.2 Building Block Design......Page 103
5.1.3 Layout Aspects......Page 122
5.1.5 Measurements......Page 127
5.1.6 Discussion of the Results......Page 130
5.2.1 Introduction......Page 133
5.2.2 Building Block Design......Page 134
5.2.3 Layout Aspects......Page 152
5.2.4 Power Dissipation......Page 154
5.2.5 Measurements......Page 155
5.2.6 Discussion of the Results......Page 157
5.3 Conclusions......Page 159
6.1.1 Introduction......Page 160
6.1.2 Building Block Design......Page 162
6.1.3 Layout Aspects......Page 163
6.1.4 Measurements......Page 167
6.1.5 Discussion of the Results......Page 170
6.2.2 Building Block Design......Page 171
6.2.3 Layout Aspects......Page 175
6.2.4 Measurements......Page 177
6.2.5 Discussion of the Results......Page 180
6.3 Conclusions......Page 183
7.1 Main Contributions and Achievements......Page 185
References......Page 188
C......Page 192
S......Page 193
X......Page 194
