Using Recursive Multibit $\Sigma\Delta$ Modulators to Reduce the Quantization Noise Power

Daniel Schinkel, Adrianus Johannes Maria van Tuijl, Anne J. Annema

    Research output: Contribution to conferencePaper

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    Abstract

    This paper discusses a recursive multibit Σ∆ architecture that enables a high effective quantizer resolution while needing only a limited number of DAC elements. The recursive architecture consists of a set of Σ∆ modulators, whereby each stage cancels the quantization noise of the preceding stage. Conventional DEM algorithms can be used in each stage to reduce the sensitivity to mismatch. The architecture enables a significant reduction of both the signal-band and out-ofband quantization noise power, compared to conventional multibit Σ∆ converters.
    Original languageEnglish
    Pages589-593
    Number of pages5
    Publication statusPublished - Nov 2004
    Event15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004 - Veldhoven, Netherlands
    Duration: 25 Nov 200426 Nov 2004
    Conference number: 15

    Conference

    Conference15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004
    Abbreviated titleProRisc
    CountryNetherlands
    CityVeldhoven
    Period25/11/0426/11/04

    Keywords

    • sigma-delta modulation
    • IR-59506
    • EWI-14491
    • quantizer
    • cascaded modulators
    • out-of-band noise
    • multibit

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