Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids

José Custòdio, Nuno Paulino, João Goes, Erik Bruun

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal-to-noise-plus-distortion-ratio. As demonstrated through simulated results in which noise and mismatch effects are included, for the same over-sampling ratio, improvements in the order of 6-to-9 dB in the dynamic range can be achieved when comparing with the same topology employing linear-DACs.
    Original languageEnglish
    Title of host publicationProceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems
    PublisherIEEE
    Publication date2008
    Pages1107-1110
    ISBN (Print)14-24-42181-0
    DOIs
    Publication statusPublished - 2008
    Event2008 IEEE 15th International Conference on Electronics, Circuits and Systems - Saint Julian's, Malta
    Duration: 31 Aug 20083 Sept 2008
    Conference number: 15
    https://ieeexplore.ieee.org/xpl/conhome/4664823/proceeding

    Conference

    Conference2008 IEEE 15th International Conference on Electronics, Circuits and Systems
    Number15
    Country/TerritoryMalta
    CitySaint Julian's
    Period31/08/200803/09/2008
    Internet address

    Fingerprint

    Dive into the research topics of 'Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids'. Together they form a unique fingerprint.

    Cite this