Digitalized analog integrated circuits.

Digital integrated circuits have significantly benefited from technology scaling down, while conventional analog integrated circuits suffer from more design constraints. In recent years, there has been strong research interest in replacing conventional analog blocks with digitally-friendly and digitally-intensive alternatives, while significant progress has been made. This paper reviews the existing digitalized analog integrated circuits, including amplifiers, analog-to-digital converters, phase-locked loops, and power supplies. Based on the review, the future development trends of the digitalized analog integrated circuits are derived.