Patent ID: 7026875

Claim:
A circuit comprising: an amplifier; a first gain control mechanism including a circuit input port and positioned along a feedback path of the amplifier; a second gain control mechanism coupled to the first gain control mechanism and integrated with a function of the amplifier; wherein the first and second gain control mechanisms are switch networks; wherein the first gain control mechanism includes a first and second portion, the first portion including a first portion impedance device, the second portion including a number of switches and second portion impedance devices, the first portion impedance device having a first end forming the first circuit input port and a second end coupled to a first end of a first of the second portion impedance devices; and wherein the second gain control mechanism includes a switch and two or more impedance devices connected in series, the switch being connected between the two or more impedance devices, open ends of the two or more impedance devices being respectively connected to the second ends of the respective first portion impedance devices.