Patent ID: 6765430
Filing Date: 2004-07-20
Classification: H03K

Abstract:
A complementary source follower circuit comprising(A) an N-channel transistor and a P-channel transistor on a substrate, each having a body connected to a body terminal, a gate connected to a gate terminal, a source connected to a source terminal and a drain connected to a drain terminal; (B) a connection from each of said gate terminals to an input terminal; (C) a connection from each of said source terminals to an output terminal; (D) a connection from the drain terminal of said N-channel transistor to a positive terminal of a power supply and a connection from the drain terminal of said P-channel transistor to a negative terminal of a power supply; and (E) a connection from each body terminal to a back bias control circuit, where said back bias control circuit shifts the threshold voltage of at least one of said transistors, and a connection from said back bias control circuit to said output terminal, wherein there is no connection from a body terminal to a source terminal, from a body terminal to a drain terminal, or from said back bias control circuit to a drain terminal.