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Analog and Digital Circuits for Electronic Control System Applications

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Analog and Digital Circuits for Electronic Control System Applications
Using the TI MSP430 Microcontroller
by Jerry Luecke

AMSTERDAM • BOSTON • HEIDELBERG • LONDON NEW YORK • OXFORD • PARIS • SAN DIEGO SAN FRANCISCO • SINGAPORE •SYDNEY • TOKYO
Newnes is an imprint of Elsevier

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Newnes is an imprint of Elsevier 200 Wheeler Road, Burlington, MA 01803, USA Linacre House, Jordan Hill, Oxford OX2 8DP, UK Copyright © 2005, Elsevier Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,photocopying, recording, or otherwise, without the prior written permission of the publisher. Permissions may be sought directly from Elsevier’s Science & Technology Rights Department in Oxford, UK: phone: (+44) 1865 843830, fax: (+44) 1865 853333, e-mail: permissions@elsevier.com.uk. You may also complete your request on-line via the Elsevier homepage (http://elsevier.com), by selecting“Customer Support” and then “Obtaining Permissions.” Recognizing the importance of preserving what has been written, Elsevier prints its books on acid-free paper whenever possible. Library of Congress Cataloging-in-Publication Data Luecke, Gerald. Analog and digital circuits for electronic control system applications : using the TI MSP430 microcontroller / by Gerald Luecke. p. cm.ISBN 0-7506-7810-0 1. Electronic circuit design. 2. Electronic control. 3. Programmable controllers. I. Title. TK7867.L84 2004 629.8'9--dc22 British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. For information on all Newnes publications visit our Web site at www.books.elsevier.com 04 05 06 07 08 09 10 9 8 7 6 5 4 3 2 1Printed in the United States of America. 2004054669

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The book is dedicated to my wife Velma and our grandchildren: From the Luecke side: Cameron, Graham, Andy, Alex, Alyssa, Brent, Jacob, Harper, Arielle, Emery. From the Hubbard side: Jared, Garrett, Matthew, Ashton, Audrey.

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Contents
Foreword.......................................................................................................................................... xi Preface .............................................................................................................................................xii Acknowledgments.............................................................................................................................xiii What’s on the CD-ROM? .................................................................................................................. xiv Chapter 1: Signal Paths from Analog to Digital ...................................................................................... 1
Introduction..................................................................................................................................................................1 A Refresher ..................................................................................................................................................................1 Accuracy vs. Speed—Analog and Digital...................................................................................................................5 Interface Electronics ....................................................................................................................................................6 The Basic Functions for Analog-to-Digital Conversion ..............................................................................................6 Summary...