Analog Integrated Circuits for Communication

This book is on the analysis and design of nonlinear analog integrated circuits that form the basis of present-day communication systems. The material is intended to be a textbook for class use but should also be a valuable source of information for a practicing engineer. Both bipolar and MOS transistor circuits have been analyzed and many numerical examples are used to illustrate the analysis and design techniques developed in this book. Problem sets at the end of each chapter emphasize the subject matter covered in the chapter.

The readers are expected to have had an introductory course in analog circuits - so that they are familiar with some of the basic analysis techniques and also with the operating principles of the various semiconductor devices. A brief review of some of these topics is provided in the book. Important basic circuits and concepts are reviewed as the subject matter is developed. The approach taken is as follows: first-order analysis techniques are developed first using basic principles and simple device models. Then circuit simulation is used to corroborate the analysis techniques. This procedure provides insight into the operation of circuits and a systematic way of obtaining an initial design of a circuit. The circuit simulation program Spice has been extensively used to verify the results of first-order analyses, and for detailed simulations with complex device models. In this manner the reader can appreciate the shortcomings of the hand analysis and use simulations when necessary. Simulation results can only be interpreted once one has an understanding of how a circuit operates and this is reflected by the manner in which the material is presented. Spice input file listings are provided for all the circuits that have been analyzed so that the reader can quickly verify the results.