This book is based on the 18 tutorials presented during the 31st workshop on Advances in Analog Circuit Design held in Villach, Austria. In it, expert designers share their insights on a variety of topics at the frontier of analog circuit design, with specific contributions focusing on the design of imaging sensors, power management circuits, PLLs and frequency synthesizers. As such, for anyone involved in analog circuit research and development, this book provides a valuable overview of the state-of-the-art.