Low-Power Low-Voltage Sigma-Delta Modulators in Nanometer CMOS by Libin YaoLow-Power Low-Voltage Sigma-Delta Modulators in Nanometer CMOS by Libin Yao

Low-Power Low-Voltage Sigma-Delta Modulators in Nanometer CMOS

byLibin Yao, Michiel Steyaert, Willy M Sansen

Paperback | November 13, 2010

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Prof. Michiel Steyaert received his Ph.D. degree in electronics from the Katholieke Universiteit Leuven (KUL) in June 1987. In 1988 he was an associated assistant professor at the U.C.L.A. From 1989 he joined the ESAT-MICAS group at the KUL, were he is now a Full Professor. His current research interests are in analog integrated circui...
Title:Low-Power Low-Voltage Sigma-Delta Modulators in Nanometer CMOSFormat:PaperbackDimensions:182 pagesPublished:November 13, 2010Publisher:Springer NetherlandsLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9048170575

ISBN - 13:9789048170579

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Table of Contents

Abstract Contents List of Tables List of Figures Symbols and Abbreviations Physical Definitions 1 Introduction 1.1 Motivation 1.2 Outline of the work 2 ADCs in Deep-Submicron CMOS Technologies 2.1 Introduction 2.2 Scaling-Down of CMOS Technologies 2.2.1 Driving Force of the CMOS Scaling-Down 2.2.2 Moving Into Deep-Submicron CMOS Technologies 2.3 Impact of Moving Into Deep-Submicron CMOS to Analog Circuits 2.3.1 Decreased Supply Voltage 2.3.2 Impact on Transistor Intrinsic Gain 2.3.3 Impact on Device Matching 2.3.4 Impact on Device Noise 2.4 ADCs In Deep-Submicron CMOS 2.4.1 Decreased Signal Swing 2.4.2 Degraded Transistor Characteristics 2.4.3 Distortion 2.4.4 Switch Driving2.4.5 Improved Device Matching 2.4.6 Digital Circuits Advantages 2.5 Conclusion 3 Principle of sigma-delta ADC 3.1 Introduction 3.2 Basic Analog to Digital Conversion 3.3 Oversampling and Noise Shaping 3.3.1 Oversampling 3.3.2 Noise Shaping 3.3.3 sigma-delta modulator 3.3.4 PerformanceMetrics for the sigma-delta ADC 3.4 Traditional sigma-delta ADC Topology 3.4.1 Single-Loop Single-Bit sigma-delta Modulators 3.4.2 Single-Loop Multibit sigma-delta Modulators 3.4.3 Cascaded sigma-delta Modulators 3.5 Conclusion 4 Low-Power Low-Voltage sigma-delta ADC Design in Deep-Submicron CMOS:Circuit Level Approach 4.1 Introduction 4.2 Low-Voltage Low-Power OTA Design 4.2.1 Gain Enhanced Current Mirror OTA Design 4.2.2 A Test Gain-Enhanced Current Mirror OTA 4.2.3 Implementation and Measurement Results 4.2.4 Two-Stage OTA Design4.3 Low-Voltage Low-Power sigma-delta ADC Design 4.3.1 Impact of Circuit Nonidealities to sigma-delta ADC Performance 4.3.2 Modulator Topology Selection 4.3.3 OTA Topology Selection 4.3.4 Transistor Biasing 4.3.5 Scaling of Integrators 4.4 A 1-V 140-µWsigma-delta modulator in 90-nm CMOS 4.4.1 Building Block Circuits Design 4.4.2 Implementation 4.4.3 Measurement Results 4.5 Measurements on PSRR and Low-Frequency Noise Floor4.5.1 Introduction of PSRR 4.5.2 PSRR Measurement Setup 4.5.3 PSRR Measurement Results 4.5.4 Measurement on Low-Frequency Noise Floor 4.6 Conclusion 5 Low-Power Low-Voltage sigma-delta ADC Design in Deep-Submicron CMOS:System Level Approach 5.1 Introduction 5.2 The Full Feedforward sigma-delta ADC Topology 5.2.1 Single-Loop Single-Bit Full Feedforward sigma-delta Modulators 5.2.2 Single-Loop Multibit Full Feedforward sigma-delta Modulators 5.2.3 Cascaded Full Feedforward sigma-delta Modulators 5.3 Linearity Analysis of sigma-delta ADC 5.3.1 Non-LinearitiesModeling in sigma-delta ADC 5.3.2 Non-Linear OTA Gain Modeling in sigma-delta ADC 5.3.3 Linearity Performance Comparison 5.4 Circuit Implementation of the Full Feedforward sigma-deltaModulator 5.5 A 1.8-V 2-MS/s sigma-delta Modulator in 0.18-µm CMOS 5.5.1 Implementation 5.5.2 Measurement results 5.6 A 1-V 1-MS/s sigma-delta Modulator in 0.13-µm CMOS 5.6.1 Implementation 5.6.2 Measurement Results 5.7 Multibit Full Feedforward sigma-delta Modulator Design 5.7.1 Optimized Loop Coefficients 5.7.2 Circuit Implementation 5.8 Conclusion 6 Flash ADC Design in Deep-Submicron CMOS 6.1 Introduction 6.2 Mismatch Study in Deep-Submicron CMOS Technologies 6.2.1 Mismatch of Components 6.2.2 Transistor Mismatch Study 6.2.3 InterconnectionMismatch Study 6.3 Conventional Flash ADC Architecture 6.4 Full Input Swing Flash ADC Architecture 6.4.1 Overall Architecture 6.4.2 Input Range Extension 6.4.3 Voltage Interpolation 6.5 Building Block Circuit Design 6.5.1 Preamplifier Design 6.5.2 Comparator Design 6.5.3 Other Building Blocks 6.6 Implementation 6.7 Measurement Results 6.8 Conclusion 7 Conclusions 7.1 Research Work Overview 7.2 Suggestions for Future Work A InterconnectionMismatch Study A.1 Introduction A.2 Resistors Made of Interconnect A.3 Modeling of the Via-Resistors A.4 Measurement Setup A.5 Experimental Results A.6 Current Density and Minimum Area A.7 Conclusion Bibliography