SOURCE FOLLOWER BASED ON DEEP N-WELL NMOS TRANSISTOR

摘要

A source follower based on a deep N-well NMOS transistor comprises a current source and a deep N-well NMOS transistor which is used as an input component. A bulk of the deep N-well NMOS transistor is connected with an input end of the source follower, so that a voltage between a source and the bulk of the deep N-well NMOS transistor is basically maintained constant in a condition that an input signal changes. The source follower has small distortion and good linearity, and is especially suitable for being used in a high-speed heavy-load scenario.