This book contains the contribution of 18 tutorials of the 12th Workshop on Advances in Analog Circuit Design. It is number 12 in the successful series of Analog Circuit Design, providing valuable information and excellent overviews of analog circuit design, CAD, and RF systems. The series can be seen as a reference to those involved in analog and mixed-signal design. Each book discusses three specific topics on new and valuable design ideas in the area of analog circuit design. Each topic is discussed by six experts in the field and state-of-the-art information is shared and overviewed. In this 12th edition the topics are Fractional-N Synthesizers, Design for Robustness, and Line and Bus Drivers. Analog Circuit Design is an essential reference source for analog design engineers and researchers that wish to keep abreast with the latest developments in the field. The tutorial coverage also makes it suitable for use in an advanced design course.