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MUX36D08: TINA simulation issue

Antonio Chen
Prodigy 40 points
Part Number: MUX36D08
Other Parts Discussed in Thread: PGA850

PGA850_MUX36D08_MUX36D08_100ohmsource_keep.TSC

Hello Sir,

I want to simulation two stage MUX36D08 settling time through TINA, but it can't workable when I run transient analysis. Could you please help to check anything wrong or need to modify? Thanks!!

  • 0
    TI__Genius 10552 points

    Hi Antonio,

    Please give me until tomorrow to check this out and will have a response for you then!

    Thanks!

    Alex

  • 0
    TI__Genius 10552 points

    Hi Antonio,

    I pulled up your model and messed around with some parameters. I changed the Transient Analysis to zero initial values and analysis parameters to 100m for DC relative error and TR maximum value relative error which resulted in the waveforms shown below. Looks like these are the key parameters that need changing to run transient analysis. Take a look at these parameters and let me know if this works for you!

    Thanks!

    Alex

  • 0 in reply to Alex Vish
    Prodigy 40 points

    PGA850_Two MUX36D08_MUX36D08_100ohmsource.TSC

    Hello Alex,

    The model is workable for transition analisys after follow your setup suggestion.
    In previously model, the second stage MUX is fixed.
    Currently I want ot verify settling time when two stage MUX both are in switch mode, so I try to add one MUX and let second stage MUX in switch , but it can't work and get error.
    Could you please help to check attached model again and give me some suggestion. Thanks for your great support.

  • 0 in reply to Antonio Chen
    TI__Genius 10552 points

    Hi Antonio,

    If I change the transient analysis settings to start at 50.0n and end at 1.0u then I get the following waveform. Is this what you're looking to simulate?

    Thanks!

    Alex

  • 0 in reply to Alex Vish
    Prodigy 40 points

    Hello Alex, 
     Thanks for your feedback. In my model the MUX switch control signal (S1_S2_CTRL & S3_S4_CTRL) is 2us, so I need end display at 3us at leeast.
    Could you please help to check how to do that in transient analysis? Thanks!!

  • 0 in reply to Antonio Chen
    TI__Genius 10552 points

    Hi Antonio,

    This is resolved if we go to Analysis -> Set Analysis Parameters -> Shunt Conductance = 100m

    FYI - for future simulation issues we have a forum for these types of problems here. I found the above solution using this post. Of course, if you ever believe there to be an issue with the device itself then you can contact us as well. 

    Let me know if you need anything else with this simulation!

    Thanks!

    Alex