VCO-Based Quantizers Using Frequency-to-Digital and Time-to-Digital Converters
This book introduces the concept of voltage-controlled-oscillator (VCO)-based analog-to-digital converters (ADCs). Detailed explanation is given of this promising new class of high resolution and low power ADCs, which use time quantization as opposed to t
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SPRINGER BRIEFS IN ELEC TRIC AL AND COMPUTER ENGINEERING
Samantha Yoder Mohammed Ismail Waleed Khalil
VCO-Based Quantizers Using Frequency-to-Digital and Time-to-Digital Converters
123
SpringerBriefs in Electrical and Computer Engineering
For further volumes: http://www.springer.com/series/10059
Samantha Yoder Waleed Khalil
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Mohammed Ismail
VCO-Based Quantizers Using Frequency-to-Digital and Time-to-Digital Converters
Samantha Yoder The ElectroScience Laboratory The Ohio State University Columbus, OH 43212, USA [email protected]
Mohammed Ismail Department of Electrical and Computer Engineering The Ohio State University Columbus, OH 43210-1272, USA [email protected]
Waleed Khalil The ElectroScience Laboratory The Ohio State University Columbus, OH 43212, USA [email protected]
ISSN 2191-8112 e-ISSN 2191-8120 ISBN 978-1-4419-9721-0 e-ISBN 978-1-4419-9722-7 DOI 10.1007/978-1-4419-9722-7 Springer New York Dordrecht Heidelberg London Library of Congress Control Number: 2011934750 # Springer Science+Business Media, LLC 2011
All rights reserved. This work may not be translated or copied in whole or in part without the written permission of the publisher (Springer Science+Business Media, LLC, 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
Traditional analog-to-digital converters (ADCs) face many design challenges as technology scales. A few of these challenges are (1) voltage dynamic range decreases making it difficult to accurately quantize in the voltage domain (2) architecture contains many analog components which are challenging to design in deep submicron complementary metal oxide semiconductor (CMOS) processes. Voltage-controlled oscillator (VCO)-based ADCs are gaining popularity due to the highly digital architecture and improved timing resolution in deep submicron CMOS processes. This book presents a theoretical and modeling approach to understanding the VCObased quantizer. Two digital time quantizer architectures are reviewed: one using a frequency-to-digital converter (FDC) and the other using a time-to-digital converter (TDC). The TDC architecture is new to the application of the VCO-based quantizer. Chapter 1 provides an introduction including the motivation for this topic, background on the subject, and goals of this work. Chapter 2 provides an introduction and theoretical analysis of the FDC and TDC VCO-based quantizer. Theoretical equations are developed to determine the resolutio
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