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TMUX1134: IBIS Model Response

Mark Philip Felipe
Genius 10820 points
Part Number: TMUX1134

Hi Team, we would like to seek your support regarding our customers inquiry.  He is running Signal Integrity analysis for an interface and using tmux1134 as my mux. But the model has only input parameters and the drain pin has no model. Since they want to run an end to end simulation including MUX in the path. 

Thank you very much in advance.

Regards,

Mark

  • 0
    TI__Genius 9132 points

    Hi Mark,

    All our signal switches are bi-directional. The switch conducts equally well from source (S) to drain (D) or from drain (D) to source (S). Each channel has very similar characteristics in both directions and supports both analog and digital signals. 

    See another similar thread below:

    Regards,

    Saminah

  • 0 in reply to Saminah C
    Prodigy 10 points

    Hello Saminah,

    Thanks for your response. Well the switch may have functional integrity when it is operated in real-time. But my concern is from analysis point. As my tool(Sigrity) is driven by the IBIS model alone and which is an important input parameter to test my cases, without which i cannot provide any stimulus especially when im planning to include switch. Hence kindly look into it and help me in this regard.

    Regards,

    Karthik

  • 0 in reply to Karthik M B
    TI__Genius 9132 points

    Hi Karthik,

    As I mentioned earlier, all our signal switches are bi-directional.

    If you want to model your analysis at the drain pin, you just need to connect it to the source side of the IBIS model. Basically, the behavior you see at the Source pin will be similar to the one you simulate from the Drain pin.

    The TMUX1134 is an NMOS/PMOS parallel switch consists of an n-channel pass transistor in parallel with a p-channel pass transistor. The Drain and source are interchangeable in this construction.

    You can find more details on the switch architecture and bi-directional nature in below videos:

    Are switches & multiplexers bidirectional?

    What are common switch architectures?

    Thanks

    Saminah