Patent ID: 7019591
Filing Date: 2006-03-28
Classification: H03F,H03K

Abstract:
1. A gain boosted operational amplifier, comprising: a field effect transistor coupled to a current source and to an input of the gain boosted operational amplifier; a first source follower coupled to said field effect transistor and to an output of the gain boosted operational amplifier; a first bias network coupled to a body terminal of a field effect transistor of said first source follower and configured to produce a first reference voltage; a first operational amplifier coupled to a source terminal of said field effect transistor of said first source follower; a second bias network coupled to said first operational amplifier and configured to produce a second reference voltage, said second reference voltage substantially equal to said first reference voltage; a second source follower coupled to said output; a second operational amplifier coupled to a source terminal of a field effect transistor of said second source follower; and a third bias network coupled to said second operational amplifier and configured to produce a third reference voltage.