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Video s3
    Details
    Poster
    Presenter(s)
    Shantanu Mehta Headshot
    Display Name
    Shantanu Mehta
    Affiliation
    Affiliation
    University of Limerick
    Country
    Abstract

    This paper presents a programmable amplitude and timing error shaping bandpass dynamic-element-matching (DEM) for Nyquist-rate D/A converters. Amplitude and timing-skew errors are shaped using two different loop-filters employed within the DEM structure. Moreover, the systematic-duty-cycle errors are eliminated from the DAC spectrum using a controlled set of ‘ON’ transitions for any choice of the input-signal over the Nyquist band. The loop-filter order within the DEM can be selected to 2, 4 or 6 and the DAC errors can be shaped over a narrow or wide band for any choice of the center-frequency. This work demonstrates that for a 12-bit segmented Nyquist DAC (5T-7B segmentation), the in-band SFDR and IMD3 is ≥80dBs for the DEM configurations.

    Slides
    • A Higher-Order Programmable Amplitude and Timing Error Shaping Bandpass DEM for Nyquist-Rate D/A Converters (application/pdf)