Mismatch-Shaped Pseudo-Passive Two-Capacitor DAC

Jesper Steensgaard-Madsen, Un-Ku Moon, Gabor C. Temes

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    A simple mismatch-shaping scheme is proposed for a two-capacitor DAC. Unlike in other mismatch-shaping systems, the shaped error is generated by direct filtering of a well-defined bounded signal, which can be generated as white noise. The operation is closely related to a specific digital interpolation filter, but arbitrary properties of the overall interpolation characteristic can be assured.Simulations indicate that the scheme can be used for the realization of DACs with 16-bit linearity and SNR performance, with only 0.1% capacitance accuracy. The DAC is pseudo-passive, i.e. an active element is required only to buffer the output signal. Hence, it is potentially a very low-power circuit, suitable for portable applications.
    Original languageEnglish
    Title of host publicationProc. IEEE Alessandro Volta Memorial Workshop on Low-Power Design
    Place of PublicationLos Alamitos
    PublisherIEEE Computer Society Press
    Publication date1999
    ISBN (Print)0-7695-0019-6
    Publication statusPublished - 1999
    EventIEEE Alessandro Volta Memorial Workshop on Low-Power Design - Como, Italy
    Duration: 4 Mar 19995 Mar 1999


    ConferenceIEEE Alessandro Volta Memorial Workshop on Low-Power Design
    Internet address

    Bibliographical note

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