Page 14 - Op Amps Design, Applications, and Troubleshooting

Preface xlii

designs that can deliver performance close to the original design goals. If tighter
performance is required, then tweaking can be done in the laboratory... a step that
would generally be required even if more elaborate methods were employed.
The majority of text material included in the first edition is retained in this
second edition. Feedback from reviewers emphasized the point "Take nothing out
... it's all important!" However, all known typographical errors and oversights
that appeared in the first edition have been corrected here. We have also updated
several references to actual A/D and D/A conversion products in Chapter 8, to
identify newer products that are more readily available. Additionally, an instruc-
tor's answer key has been developed and is available from the publisher; it
includes solutions to all end-of-chapter problems.
For reasons stated previously, we have elected to continue using the basic
741 as the primary op amp for use in the analysis and design examples. Clearly,
the 741 is a mature product, but the analytical techniques presented work well
with newer and more ideal op amps. Fortunately, the decision to focus on these
older devices to satisfy the requirements of many school curriculums does not
lessen the applicability of the material to programs that use higher-performance
devices.
Your comments, criticisms, and recommendations for improvement of this
text are welcomed. You may send your comments to the publisher; or alternatively,
if you prefer you may send your comments directly to the author via e-mail to
feedback@terrelltech.com. While visiting the Terrell Technologies, Inc.,
home page, you can also download other useful educational materials and soft-
ware products. In early 1996, the company plans to have PSpice files available for
all the op amp designs presented in this text; they will be available to be down-
loaded for free.