Over 100 dBc ROM-less Piecewise Non-linear Direct Digital Frequency Synthesizers

Valeriu Beiu, D. J. Betowski, P.-S. Wu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)


    This paper deals with maximizing the spurious free dynamic range (SFDR), while also minimizing the power consumption of sine-wave approximation circuits used in direct digital frequency synthesizers. Three 16-segments ROM-less piecewise non-linear approximations are introduced and compared with many other ROM-less solutions. The circuit complexity (estimated as the number of transistors, is comparable to that of other 16-segment piecewise linear approximations, while the SFDR is significantly increased from 48+72 dBc to over 100 dBc.
    Original languageEnglish
    Title of host publicationIEEE International Midwest Symposium on Circuit and Systems
    Publication statusPublished - Dec 27 2003
    EventMWSCAS'03 - Cairo, Egypt
    Duration: Dec 27 2003 → …


    Period12/27/03 → …


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