On the implementation of input-feedforward delta-sigma modulators

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 2006Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Circuits and Systems II: Express Briefs, volume 53, pages 453-457 (issn: 1057-7130,

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Authors: Ahmed Gharbiya; David A. Johns;

doi: 10.1109/tcsii.2006.873829

On the implementation of input-feedforward delta-sigma modulators

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Abstract

This brief addresses some practical issues on the implementation of the input-feedforward delta-sigma modulators. First, the timing constraint imposed by the input-feedforward path is identified and a possible method to relax the constraint is proposed. Second, the drawbacks of the analog adder needed before the quantizer are explained and a method to eliminate the adder is proposed

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