Patent ID: 7760022

Claim:
An amplifier circuit for a signal generator comprising: positive and negative current sources respectively receiving first and second current inputs and generating respective current outputs; a first current to voltage converter for generating an output voltage from the respective current outputs provided by the positive and negative current sources; a bias generator producing first and second bias voltages set according to a desired level for optimum dynamic range and amplifier linearity; a second current to voltage converter coupled to receive a current representative of the first bias voltage and producing a first voltage output inverted from the first bias voltage, and a third current to voltage converter coupled to receive a current representative of the second bias voltage and producing a second voltage output inverted from the second bias voltage; and a first voltage to current converter receiving the first inverted voltage output and an input voltage and producing a first current output representative of the first bias voltage and the input voltage, and a second voltage to current converter receiving the second inverted voltage output and the input voltage and producing a second current output representative of the second bias voltage and the input voltage; wherein the first current output of the first voltage to current converter is provided to the positive current source as the first current input and the second current output from the second voltage to current converter is provided to the negative current source as the second current input.