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Digitally Assisted Pipeline ADCs : Theory and Implementation - Boris Murmann

Digitally Assisted Pipeline ADCs

Theory and Implementation

Hardcover Published: 30th April 2004
ISBN: 9781402078392
Number Of Pages: 155

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With the advent of powerful digital signal processing in portable electronic applications, we have seen a growing, unsatisfied demand for power efficient, high-speed and high-resolution analog-to-digital converters (ADCs). While technology scaling has led to revolutionary gains in digital computing power and energy efficiency, progress in analog-to-digital conversion interfaces has been comparatively slow. Digitally Assisted Pipeline ADCs: Theory and Implementation explores the opportunity to reduce ADC power dissipation by leveraging digital signal processing capabilities in fine line integrated circuit technology. The described digitally assisted pipelined ADC uses a statistics-based system identification technique as an enabling element to replace precision residue amplifiers with simple open-loop gain stages. The digital compensation of analog circuit distortion eliminates one key factor in the classical noise-speed-linearity constraint loop and thereby enables a significant power reduction. Digitally Assisted Pipeline ADCs: Theory and Implementation describes in detail the implementation and measurement results of a 12-bit, 75-MSample/sec proof-of-concept prototype. The Experi

List of Figures
List of Tables
Acknowledgements
Preface
Introduction
Motivation
Overview
Chapter Organization
Performance Trends
Introduction
Digital Performance Trends
ADC Performance Trends
Scaling Analysis
Introduction
Basic Device Scaling from a Digital Perspective
Technology Metrics for Analog Circuits
Scaling Impact on Matching-Limited Circuits
Scaling Impact on Noise-Limited Circuits
Improving Analog Circuit Efficiency
Introduction
Analog Circuit Challenges
The Cost of Feedback
Two-Stage Feedback Amplifier vs. Open-Loop Gain Stage
Discussion
Open-Loop Pipelined ADCs
A Brief Review of Pipelined ADCs
Conventional Stage Implementation
Open-Loop Pipeline Stages
Alternative Transconductor Implementations
Digital Nonlinearity Correction
Overview
Error Model and Digital Correction
Alternative Error Models
Statistics-Based Parameter Estimation
Introduction
Modulation Approach
Required Sub-ADC and Sub-DAC Redundancy
Parameter Estimation Based on Residue Differences
Statistics Based Difference Estimation
Complete Estimation Block
Simulation Example
Discussion
Prototype Implementation
ADC Architecture
Stage 1
Stage 2
Post-Processor
Experimental Results
Layout and Packaging
Test Setup
Measured Results
Post-Processor Complexity
Conclusion
Summary
Suggestions for Future Work
Appendices
Open-Loop Charge Redistribution
B
C
Time Constant
Output Variance
Maximum Gain Parameters
References
Index
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9781402078392
ISBN-10: 1402078390
Series: Mathematical Concepts in Science & Engineering S
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 155
Published: 30th April 2004
Publisher: Springer-Verlag New York Inc.
Country of Publication: US
Dimensions (cm): 23.5 x 15.5  x 1.27
Weight (kg): 0.46