Patent ID: 7120411
Filing Date: 2006-10-10
Classification: H03F,H03G,H04B

Abstract:
1. A method for adjusting a gain output in an amplifier, comprising: conducting current through an output inductive load device and through a number of branches of a first circuit portion operatively coupled downstream of the inductive output load device; selectively conducting current either through a second number of branches of a second circuit portion to increase an output gain by increasing current through the output inductive load device based upon a first logic state of a control signal or to decrease the output gain by decreasing current through the output inductive load device by increasing current conducted through the second number of branches of a third circuit portion based upon a second logic state of the control signal; and wherein a number of branches of the first circuit portion is always equal to a number of branches in the second and third branches that are conducting current and further wherein a frequency response defined at least in part by the output inductive load device and parasitic capacitance of MOSFET devices used to adjust the output gain remains substantially constant.