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digital line driver, etc.

Discussion in 'Electronic Design' started by Michael, Sep 11, 2006.

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  1. Michael

    Michael Guest

    I am looking (just started, haven't done much "homework" yet) for the
    most robust way to transmit logic signals (three of them).
    The distance is short - 6-8 inches. The environment is very noisy -
    spark discharge with dV/dt in the order of kV/ns is present.
    I have not seen many differential transceivers datasheets yet... How
    high in frequency does CMRR go?
    I'd rather stay with ribbon cable, as I do not have much room neither
    for cable nor for connectors.... Unless somebody makes ultraminiature
    connectors and cables. The signals are slow, it is the transitions I
    care about, 10-20ns is fine....

    Any suggestions?

    Does anybody have any experience with AD ADuM12xx isolators? The
    datasheet looks fantastic.
    I did some prototyping and noticed that the chip is useless (for me)
    because it picks up the noise.
    I corresponded with AD, no joy... I do not exclude the possibility of
    "operator error", but think it is unlikely.
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