The fourth edition of CMOS Circuit Design, Layout, and Simulation covers the practical design of both analog and digital integrated circuits offering a vital, contemporary view of a wide range of analog/digital circuit blocks including: phase-locked-loops, delta-sigma sensing circuits, voltage/current references, op-amps, the design of data converters, and switching power supplies. The books accompanying website, CMOSedu.com, offers numerous examples for many computer-aided design (CAD) tools including Cadence, Electric, HSPICE, LASI, LTspice, Spectre, and WinSpice. Readers will be able to recreate, modify, or simulate the design examples presented in the book. In addition, end-of-chapter problems and solutions, the books figures, and additional homework problems without solutions are found at CMOSedu.com. This fourth edition of CMOS Circuit Design, Layout, and Simulation is the ideal companion for undergraduate and graduate students in electrical and computer engineering as well as both novice and senior engineers working on transistor-level integrated circuit design.