Patent ID: 8489052
Filing Date: 2013-07-16
Classification: H03F,H03G,H04B

Abstract:
1. An amplifier, comprising: an input configured to receive differential voltage signals; an output configured to output differential current signals based on the received differential voltage signals; and a linearization circuit configured to receive a varying control signal associated with a gain of the amplifier, and to output a gain control signal to enable the amplifier to produce the output differential current signals at a desired gain, wherein the gain control signal dynamically produces a linear change in the gain of the amplifier in response to a variation in the varying control signal to enable the amplifier to produce the output differential current signals at the desired rain, the varying control signal is associated with a control voltage, and the linearization circuit is configured to output the gain control signal based on the control voltage, and a value of a first current component of the gain control signal is configured to decrease with a decrease in the control voltage, and a value of a second current component of the gain control signal is configured to increase with a decrease in the control voltage.