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MASH Digital Delta–Sigma Modulator with Multi-Moduli

  • Tao XuEmail author
  • Marissa Condon
Chapter
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 60)

Abstract

This chapter proposes a novel design methodology for a Multi-stAge noise SHaping (MASH) digital delta–sigma modulator (DDSM) which employs multi-moduli. The structure is termed the MM-MASH. The adequacy and benefit of using such a structure is demonstrated. In particular, the sequence length is lengthened if the quantizer modulus of the first-order error feedback modulator (EFM1) of each stage are co-prime numbers. An expression for the sequence length of an MM-MASH is derived.

Keywords

Delta–sigma modulation sequence length multi-moduli co-prime numbers 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.RF Modelling and Simulation Group, Research Institute for Networks and Communications Engineering (RINCE), School of Electronic EngineeringDublin City UniversityDublin 9Ireland

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