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Original question:

HD3SS3411: Off-capacitance And Switching-time Parameters

HD3SS3411: DS Update ...? complementarity

Alfred Fuchs1
Intellectual 320 points
Part Number: HD3SS3411
Other Parts Discussed in Thread: TMUX1511

Guys, three years later the datasheet is still not updated. I stumbled over the same tsw typo.

But a related question: I wanted to mux two 120°-shifted sinewaves i.e. the signals are not exactly complementary. 

Which difference would that make, if any?

  • 0
    TI__Guru*** 146835 points

    There is switching delay, what is your datarate?

    Sorry for the datasheet issue.

    Regards

    Brian

  • 0 in reply to Brian Zhou
    Intellectual 320 points

    My data rate is as high as I can get... but minimum is around 20 Mbps.

    Context: I do a kind of BPSK where the carrier frequency is several hundred MHz, close to a GHz. 

    Strangely there is this tradeoff between bandwidth and switching time.

    I understood there is a diversity of internal architectures though from the outside they are all analog switches.

    It seems the best I can get is the TMUX1511.

    The specific question was about the common-mode aspect, because my two signals are not differential (I use a 3-phase system, the third phase is not switched). I'd guess that this detail ought not be relevant, but I better ask.

    Situation clear enough?

  • 0 in reply to Alfred Fuchs1
    TI__Guru*** 146835 points

    HD33SS411 is designed for differential signal, may have issue sometimes for single ended.

    Regards

    Brian