Source Follower: Voltage Buffer & Level Shifter

This lecture covers the operation of a source follower, also known as a voltage buffer, explaining its characteristics, gain stage, and output resistance. It delves into the common-source amplifier, discussing its design and performance. The instructor also presents the source follower with a current source, detailing its working principle and calculations. Furthermore, the lecture explores the output resistance of a source follower and its impact on circuit design. Finally, it discusses the source follower as a level shifter, highlighting its role in shifting DC levels and voltage headroom limitations.