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High Performance PWM Power Audio Amplifier
A method used to remove the distortion in a digital PWM amplifier is introduced. This method is based on correction factors added to each integrator of a multi-bits delta-sigma modulator loop. This results in a tremendous improvement in the distortion performance of the system. A dynamic range of 100dB is obtained, with all harmonics supressed below 102dB. It is particularly useful for digital audio amplifiers.
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