Patent ID: 7282996

Claim:
An electronic apparatus, comprising: an electronic amplifier having a signal gain and a bias state, wherein the signal gain is adjustable to either of at least two different signal gain settings and wherein the bias state is adjustable to either of at least two different bias state settings; a bias state control circuit, wherein the bias state control circuit has capability of adjusting the bias state setting of the amplifier based upon the signal gain setting to which the amplifier is adjusted, and, a gain control circuit, wherein the gain control circuit is separate from the bias state control circuit and has capability of separately adjusting the signal gain setting of the amplifier, wherein the bias state control circuit is configured to adjust the bias state of the amplifier based upon a bandwidth control signal inputted to the bias state control circuit, and the gain control circuit is configured to adjust the signal gain of the amplifier based upon a gain control signal inputted to the gain control circuit.