Patent ID: 6885234
Filing Date: 2005-04-26
Classification: H03K

Abstract:
1. A resistance load source follower circuit comprising (A) a transistor on a substrate, 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, where there is no connection from a body terminal to a source terminal or from a body terminal to a drain terminal; (B) a connection from said gate terminal to an input terminal; (C) a resistance load having a first terminal and a second terminal; (D) a connection from said source terminal and from said first terminal to an output terminal; (E) a power supply having two terminals; (F) a connection from the drain terminal of said transistor to one terminal of said power supply and a connection from said second terminal to the other terminal of said power supply; and (G) a connection from said body terminal to a back bias control circuit, where said back bias control circuit independently controls the threshold voltage of said transistor to reduce power usage by said circuit, and a connection from said back bias circuit to said output terminal, and there is no connection from said back bias control circuit to a drain terminal.