Preface of Analog Integrated Circuit Design, 2nd Edition PDF
It has long been predicted that there would soon be little need for analog circuitry because the world increasingly relies on digital signals, yet the need for good analog circuit design remains strong. Many applications have indeed replaced analog circuitry with their digital counterparts (such as digital audio). However, when digitizing physical signals, analog-to-digital and digital-to-analog converters are always needed, together with their associated anti-aliasing and reconstruction filters. In addition, new applications continue to appear; their requirements demand the use of high-performance analog front ends, such as digital communication over wireline and wireless channels and microsensor interfaces. Also, as integrated circuits integrate more functionality, it is much more likely that at least some portion of a modern integrated circuit will include analog circuitry to interface to the real world. Moreover, the continued scaling of digital circuits has led to the emergence of new problems that require analog solutions, such as on-chip power management and the generation of stable clock signals. Although it may constitute only a small portion of total chip area, analog circuitry is often the limiting factor on overall system performance and the most difficult part of the IC to design. As a result, a strong industrial need for analog circuit designers continues. The purpose of this book is to help develop excellent analog circuit designers by presenting a concise treatment of the wide array of knowledge required by an integrated circuit designer.
This book strives to quash the notion that the design and test of high-performance analog circuits are “mystical arts.” Whereas digital design is relatively systematic, analog design appears to be much more based upon intuition and experience. Analog testing may sometimes seem to depend more upon the time of day and phase of the moon than on concrete electrical properties. But these thoughts about analog circuits usually occur when one is not familiar with the many fundamentals required to create high-performance analog circuits. This book helps to take the mystery out of analog integrated circuit design. Although many circuits and techniques are described, the most important design principles are emphasized throughout this book. Physical and intuitive explanations are given, and although mathematical quantitative analyses of many circuits have necessarily been presented, one must not miss seeing the forest for the trees. In other words, this book attempts to present the critical underlying concepts without becoming entangled in tedious and overcomplicated circuit analyses.
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