Ebook_Structured Analog CMOS Design

glenchan · 发表于 2008-10-24 10:22:16

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Structured Analog CMOS Design describes a structured analog design approach that makes it possible to simplify complex analog design problems and develop a design strategy that can be used for the design of large number of analog cells. It intentionally avoids treating the analog design as a mathematical problem, developing a design procedure based on the understanding of device physics and approximations that give insight into parameter interdependences.
The proposed transistor-level design procedure is based on the EKV modeling approach and relies on the device inversion level as a fundamental design variable. Since all important design parameters can be expressed as continuous functions of the device inversion level, the design optimum as well as the technology limits can be easily found.
The basic design concept consists in analog cell partitioning into the basic analog structures and sizing of these basic analog structures in a predefined procedural design sequence. The procedural design sequence ensures the correct propagation of design specifications, the verification of parameter limits and the local optimization loops. The proposed design procedure is also implemented as a CAD tool that follows this book.
Finally, as a practical example, the design of analog amplifiers in a hybrid multi-bit Delta-Sigma modulator system is described in detail from system level to transistor level.

glenchan · 发表于 2008-10-24 10:23:37

Springer 2008

dragonrain · 发表于 2008-11-30 04:01:56

thank you! I can only download front and back cover from Spring.

mscyc0909 · 发表于 2010-11-28 11:38:18

1 Introduction
1.1 The objectives of this work .................................................................2
1.2 Structured analog design .....................................................................3
1.3 Transistor-level design based on the device inversion level ...............4
1.4 CAD tools for analog design assistance ..............................................5
1.5 Practical design example .....................................................................5
1.6 Book organization ...............................................................................5
2 Transistor level design
2.1 MOS transistor model .........................................................................7
2.1.1 Overview of MOS models ......................................................8
2.1.2 MOS model oriented towards transistor-level design ...........10
2.2 Transistor design parameters .............................................................10
2.2.1 Transistor symmetry and voltage definitions ........................11
2.2.2 Operating regions ..................................................................12
2.2.3 Strong inversion, pinch-off voltage and slope factor ............13
2.2.4 Weak inversion .....................................................................15
2.2.5 Drain current and specific current ........................................16
2.2.6 Saturation drain current and saturation voltage ....................18
2.2.7 Inversion factor as a measure of the device inversion
level .......................................................................................20
2.2.8 Transconductances ................................................................20
2.2.9 Normalized transconductance ...............................................22
2.2.10 Capacitances .........................................................................24
2.2.11 Intrinsic gain .........................................................................26
2.2.12 Transition frequency .............................................................27
2.2.13 Intrinsic noise ........................................................................27
2.3 Design approach ................................................................................28
2.3.1 Design parameters and design variables ...............................28
2.3.2 Table of design parameters as functions of
the design variables ...............................................................30
2.3.3 Analyses of design parameters as functions of
the design variables ...............................................................32
2.3.4 Design steps ..........................................................................40
2.3.5 Design recipes .......................................................................41
2.4 Conclusion ........................................................................................46
Bibliography ............................................................................................48
3 BSIM to EKV conversion
3.1 Motivation and purpose .....................................................................51
3.2 Conversion concept ...........................................................................52
3.3 BSIM versus EKV, the fundamental differences and
the conversion algorithm guidelines .................................................53
3.4 Conversion algorithm ........................................................................55
3.4.1 Initialization ..........................................................................57
3.4.2 Specific current calculation ..................................................59
3.4.3 Extraction of parameters VTO, GAMMA and PHI ..............60
3.4.4 Extraction of parameters LETA, WETA, and LK, Q0 .........60
3.4.5 Extraction of parameters KP, E0 ..........................................61
3.4.6 Extraction of parameters RSH, DL .......................................62
3.4.7 Extraction of parameters UCRIT, LAMBDA .......................62
3.4.8 Extraction of parameters IBA, IBB, IBN .............................64
3.4.9 Extraction of parameters TCV, BEX, and UCEX ................64
3.4.10 Extraction of parameters KF, AF ..........................................64
3.5 Conversion results .............................................................................64
3.5.1 The 0.18 μm CMOS technology conversion example ..........68
3.5.2 Results interpretation for analog design ...............................72
3.6 Conclusion .........................................................................................73
3.7 Download ..........................................................................................73
Bibliography ............................................................................................74
4 Basic analog structures
4.1 Introduction .......................................................................................77
4.2 Basic analog structures library ..........................................................77
4.2.1 Transistor in a design environment .......................................80
4.3 Structured design approach ...............................................................81
4.3.1 Circuit partitioning ................................................................82
4.3.2 Derivation of the specifications ............................................83
4.4 Transconductance structures ............................................................87
4.4.1 Common source ....................................................................87
4.4.2 Common drain ......................................................................89
4.4.3 Common gate ........................................................................92
4.4.4 Cascode and folded cascode .................................................95
4.4.5 Differential pair .....................................................................98
4.5 Load structures ................................................................................107
4.5.1 Simple current mirror ..........................................................107
4.5.2 Cascode current mirror .......................................................109
4.6 Bias structures .................................................................................110
4.6.1 Voltage bias ........................................................................110
4.6.2 Current bias .........................................................................112
4.7 Conclusion .......................................................................................114
Bibliography ..........................................................................................115
5 Procedural design scenarios
5.1 Introduction ....................................................................................117
5.1.1 Procedural design sequence for an analog amplifier ..........117
5.1.2 Definitions of the circuit-level design parameters ..............120
5.2 Procedural design scenario for a folded-cascode OTA ...................127
5.2.1 Circuit-level design parameters ..........................................127
5.2.2 Frequency analysis ..............................................................130
5.2.3 Circuit partitioning ..............................................................134
5.2.4 Derivation of the specifications ..........................................134
5.2.5 Procedural design sequence ................................................136
5.3 Procedural design scenario for a fully-differential folded
cascode OTA ...................................................................................141
5.3.1 Circuit-level design parameters ..........................................143
5.3.2 Frequency analysis ..............................................................144
5.3.3 Circuit partitioning ..............................................................147
5.3.4 Derivation of the specifications ..........................................149
5.3.5 Procedural design sequence ................................................152
5.4 Procedural design scenario for a Miller operational amplifier ........156
5.4.1 Circuit-level design parameters ..........................................157
5.4.2 Frequency analysis ..............................................................158
5.4.3 Circuit partitioning ..............................................................160
5.4.4 Derivation of the specifications ..........................................162
5.4.5 Procedural design sequence ................................................163
5.5 Conclusion .......................................................................................166
Bibliography ..........................................................................................167

mscyc0909 · 发表于 2010-11-28 11:41:33

6 PAD tool
6.1 Introduction .....................................................................................169
6.1.1 Overview of analog CAD tools ..........................................170
6.1.2 Procedural Analog Design (PAD) tool ...............................171
6.2 PAD structure ..................................................................................173
6.2.1 Chart-based graphical interface ..........................................174
6.3 Basic analog structures library ........................................................174
6.4 Procedural design scenarios ............................................................177
6.4.1 Example of the procedural design for
a folded cascode OTA .........................................................178
6.4.2 Example of the procedural design for
a Miller operational amplifier .............................................178
6.5 BSIM and EKV model library file input .........................................183
6.6 Conclusion .......................................................................................184
6.7 Download ........................................................................................184
Bibliography ..........................................................................................185
7 Topology variants
7.1 Basic concept ..................................................................................189
7.1.1 Design example: fully-differential folded cascode OTA
and its CMFB amplifier ......................................................189
7.2 Gain enhancement - two stages .......................................................192
7.2.1 Miller compensation ...........................................................193
7.2.2 Cascode Miller compensation .............................................196
7.3 Gain enhancement - gain boosting ..................................................200
7.4 Input common-mode range enhancement - complementary
differential pair ................................................................................206
7.5 Differential input range enhancement - linearized differential
pair ...................................................................................................210
7.6 Rejection of the differential signal in a common-mode signal
- cascoded current bias sources .......................................................214
7.7 CMFB stability improvement - split bias sources ...........................216
7.8 Conclusion .......................................................................................219
Bibliography ..........................................................................................220
8 Practical example: the design of analog amplifiers in the Delta-Sigma modulator system
8.1 Delta-Sigma modulator system .......................................................221
8.1.1 Design flow .........................................................................223
8.1.2 Verification of the performance ..........................................225
8.2 Derivation of the testbench .............................................................227
8.2.1 Fully-differential difference amplifier ................................227
8.2.2 Fully-differential amplifier in the first integrator ...............229
8.2.3 Fully-differential amplifier in the second integrator ...........230
8.3 Topology selection ..........................................................................233
8.3.1 Analysis of technology limits .............................................234
8.3.2 Topology variants to fulfill the additional design
requirements ........................................................................237
8.4 Design of the fully-differential high-gain amplifier ........................238
8.4.1 Equivalent output load ........................................................240
8.4.2 Procedural design sequence ................................................241
8.4.3 Simulation results ...............................................................248
8.5 Design of the fully-differential difference amplifier .......................251
8.5.1 Procedural design sequence ................................................253
8.5.2 Simulation results ...............................................................263
8.6 Design of the fully-differential two-stage amplifier .......................267
8.6.1 Equivalent output load ........................................................267
8.6.2 Additional design requirements for
the continuous-time integrator ............................................270
8.6.3 Procedural design sequence ................................................272
8.6.4 Simulation results ...............................................................276
8.7 Conclusion .......................................................................................279
Bibliography ..........................................................................................280
Index ...........................................................................................................281