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LSB Dithering in MASH Delta–Sigma D/A Converters

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2 Author(s)
Pamarti, S. ; Dept. of Electr. Eng., California Univ., Los Angeles, CA ; Galton, I.

Theoretical sufficient conditions are presented that ensure that the quantization noise from every constituent digital delta-sigma (DeltaSigma) modulator in a multistage digital DeltaSigma modulator is asymptotically white and uncorrelated with the input. The conditions also determine if spectral shape can be imparted to the dither's contribution to the power spectral density of the multistage digital DeltaSigma modulator's output. A large class of popular multistage digital DeltaSigma modulators that satisfy the conditions are identified and tabulated for easy reference

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:54 ,  Issue: 4 )