Patent ID: 6636116
Filing Date: 2003-10-21
Classification: H03F

Abstract:
A differential current feedback amplifier for providing a differential output based on at least one input, comprising:first and second low impedance input systems operatively coupled with first and second input terminals, respectively; a first gain system receiving first and second input signals from the first and second low impedance input systems, respectively, and operative to provide a first phase shifted signal based on the second input signal and a first intermediate signal based on the first input signal and the first phase shifted signal, wherein the first phase shifted signal is out of phase with the second input signal by a first phase shift value; a second gain system receiving the first and second input signals, and operative to provide a second phase shifted signal based on the first input signal and a second intermediate signal based on the second input signal and the second phase shifted signal, wherein the second phase shifted signal is out of phase with the first input signal by a second phase shift value; and first and second output systems operatively coupled with the first and second gain systems to receive the first and second intermediate signals, respectively, and to provide first and second differential output signals to first and second output terminals based on the first and second intermediate signals, respectively.