Wide-Bandwidth high Dynamic Range D/A Converters

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WIDE-BANDWIDTH HIGH DYNAMIC RANGE D/A CONVERTERS

by

Konstantinos Doris

Philips Research Laboratories, Eindhoven, The Netherlands

Arthur van Roermund

Eindhoven University of Technology, Eindhoven, The Netherlands

and

Domine Leenaerts

Philips Research Laboratories, Eindhoven, The Netherlands

Published by Springer,

P.O. Box 17, 3300 AA Dordrecht, The Netherlands.

www.springer.com

Printed on acid-free paper

All Rights Reserved © 2006 Springer No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work.

Printed in the Netherlands.

HIGH-SPEED Digital to Analog (D/A) converters are essential components in digi tal communication systems providing the necessary conversion of signals encoding information in bits to signals encoding information in their amplitude vs. time domain characteristics. In general, they are parts of a larger system, the interface, which con sists of several signal conditioning circuits. Dependent on where the converter is located within the chain of circuits in the interface, signal processing operations are partitioned in those realized with digital techniques, and those with analog.
The rapid evolution of CMOS technology has established implicit and explicite trends related to the interface, and in particular to the D/A converter. The implicit relationship comes via the growth of digital systems. First, it is a global trend with respect to all interface circuits that increasing operating frequencies of digital systems place a similar demand for the interface circuits. The second trend takes place locally within the inter face. Initially, the D/A converter was placed at the beginning of the interface chain, and all signal conditioning was implemented in the analog domain after the D/A conversion. The increasing flexibility and robustness of digital signal processing shifted the D/A converter closer to the end point of the chain where the demands for high quality high frequency operation are very high. Third, there is a gradual change in the signal properties and spec ifications, which reflect to the rapid widening of application range, to user requirements, and of course to environmental constraints relevant to the application. Explicit trends are established by the direct impact of physical constrains of the technology on converters. One of them concerns how information is distributed in the amplitude and time domains. Modern CMOS technologies allow less and less room to use the amplitude domain due to decreasing power supply levels but not decreasing noise and interference levels. Instead, they offer plenty of room in the time domain.
Wideband high dynamic range D/A converters are carriers of these trends and enablers of modern multi-carrier communication applications. These converters are required to process multiple signals over large frequency ranges of hundreds of mega hertz with high ..........

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