Output distortion cancellation circuit
AssigneeAnalog Devices, Inc.
InventorsMoshe Gerstenhaber, James Bundock
Life of this patent
Estimating the term…
Abstract
An output distortion circuit includes a first transistor arrangement receiving a nonlinear current associated with a nonlinear differential error signal. The first transistor arrangement produces a reflected base current that is applied to one side of a differential input pair. A second transistor arrangement eliminates the nonlinear differential error signal by producing a replicated base current that replicates the reflected base current. The replicated base current is applied to an opposite side of the differential input pair thus the output distortion cancellation circuit creating a deflection of approximately equal magnitude to the reflected base current so as to eliminate the nonlinear differential error signal.
Claims13
An output distortion cancellation circuit comprising:
- a first transistor arrangement receiving a nonlinear current associated with a nonlinear differential error signal, said first transistor arrangement produces a reflected base current that is applied to one side of a differential input pair;
- and
- a second transistor arrangement eliminating said nonlinear differential error signal by producing a replicated base current that replicates said reflected base current, said replicated base current is applied to an opposite side of said differential input pair, thus said output distortion cancellation circuit creating a deflection of approximately equal magnitude to said reflected base current so as to eliminate said nonlinear differential error signal.
A method of removing nonlinear differential errors from an amplifier comprising:
- receiving a nonlinear current associated with a nonlinear differential error signal,
- producing a reflected base current that is applied to one side of a differential input pair;
- eliminating said nonlinear differential error signal by producing a replicated base current that replicates said reflected base current, and
- applying said replicated base current to an opposite side of said differential input pair thus creating a deflection of approximately equal magnitude to said reflected base current so as to eliminate said nonlinear differential error signal.
Dependencies are inferred from the claim text.