Patent ID: 6107888
Filing Date: 2000-08-22
Classification: H03F

Abstract:
A dual-input-to-single-output amplifier circuit comprising:a processing amplifier having a first input region and a second input region, each of which exhibits a relatively high circuit impedance, and having an output region which exhibits a relatively low circuit impedance, the processing amplifier being capable of providing at the output region a signal in a first magnitude direction substantially similar to a signal provided at the second input region in the first magnitude direction but of a greater magnitude in the first magnitude direction, and the processing amplifier being further capable of providing at the output region a signal in a second magnitude direction substantially similar to a signal provided at the first input region in the first magnitude direction but of a greater magnitude in the second magnitude direction;first and second coupling regions each suited for coupling to a corresponding one of first and second voltage input regions;a first input impedance circuit coupled between the first coupling region and the first input region;a second input impedance circuit coupled between the second coupling region and the second input region;a first feedback impedance circuit coupled between the output region and the first input region;a second feedback impedance circuit coupled between the output region and the second coupling region;a first shunting impedance circuit coupled between the first coupling region and a reference voltage terminal region; anda second shunting impedance circuit coupled between the second input region and the reference voltage terminal region.