Design of a 10-bit 100 MSamples/s BiCMOS D/A converter

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    Abstract

    A 10-bit 100 MSamples/s current-steering D/A converter (DAC) has been designed and processed in a 0.8 μm BiCMOS process. The DAC is intended for applications using direct digital synthesis, and focus has been set on achieving a high spurious free dynamic range (SFDR). The main part of the DAC is a matrix of current cells. To reduce skew between the steering signals to the current cells, an emitter-coupled logic (ECL) flip-flop, clocked by a global ECL clock, is included in each current cell. A bipolar differential pair, steered by the differential output of the ECL flip-flop, is used in each current cell to steer the current. At a generated frequency of fg≈0.3·fs (fs=100 MSamples/s), the simulated SFDR is larger than 60 dB. The DAC operates at 5 V, and has a power consumption of approximately 650 mW. The area of the chip-core is 2.2 mm×2.2 mm. Furthermore a measure to estimate the SFDR for the DAC based on short term simulations is presented. This measure seems to correspond very well with SFDR for long term simulations
    Original languageEnglish
    Title of host publicationCircuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
    Volume2
    PublisherIEEE
    Publication date1995
    Pages730-733
    ISBN (Print)0-7803-2972-4
    DOIs
    Publication statusPublished - 1995
    EventCircuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on -
    Duration: 1 Jan 1995 → …

    Conference

    ConferenceCircuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
    Period01/01/1995 → …

    Bibliographical note

    Copyright: 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

    Cite this

    Jørgensen, I. H. H., & Tunheim, S. A. (1995). Design of a 10-bit 100 MSamples/s BiCMOS D/A converter. In Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on (Vol. 2, pp. 730-733). IEEE. https://doi.org/10.1109/MWSCAS.1995.510193