Multistage scrambler for a digital to analog converter

2003 
A multistage scrambler for a digital to analog converter having a non-ideal transfer function resulting from an error function which causes harmonic distortion includes a first shuffling network having a first input for receiving digital data and a first output, the first shuffling network including a first set of data switches; a first sequence generator for selectively interconnecting the first set of data switches to reorder at the first output the digital data received at the first input to reduce the harmonic distortion to lower magnitude colored noise; a second shuffling network having a second input for receiving the reordered digital data from the first output and a second output, the second shuffling network including a second set of data switches; and a second sequence generator for selectively interconnecting the second set of data switches to reorder at the second output the digital data received at the second input to transform the colored noise toward lower power white noise.
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