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TLV9102: Simulation time of the Spice model TLV9102 using the Orcad Pspice engine vs TINA simulator

Bruno Simard67
Prodigy 200 points
Part Number: TLV9102

Hello,

Does somebody understand why the Spice model of the opamp TLV9102 takes so long (related to the bias point) to simulate inside Orcad PSpice simulator in comparison with TINA simulator?

Here is the information in title of the Spice model:

* TLV9102 - Rev. A
* Created by Paul Goedeke; June 04, 2019
* Created with Green-Williams-Lis Op Amp Macro-model Architecture
* Copyright 2019 by Texas Instruments Corporation
******************************************************

Also, do know if there is any information available on the Ti web site for the Green-Williams-Lis Op Amp Macro-model Architecture. Particularly a wired model will be great!

Thank you

Best Regards

Bruno

  • 0
    TI__Mastermind 18217 points

    Hey Bruno, 

    The delay in the simulation usually indicates a convergence issue.   

    I think there might be an issue with the model.
    Some of our GWL architecture models are having issues with PSpice. 
    You can try the TINA model on the product page if you would like. 


    If you would like to, we can look at your schematic to make sure that there is no other reason for convergence issues.

    All the best, 
    Carolina 

  • 0 in reply to Caro Walter
    Prodigy 200 points

    Hello Caro,

    I am pretty much sure that my schematic is good because I run excatly the same project on TINA, and the simulation time is quite better or normal. So do you know what is the workaround with the GWL architecture models and PSPICE?

    Thanks!

    Regards

    Bruno

  • 0 in reply to Bruno Simard67
    TI__Mastermind 18217 points

    Hey Bruno, 

    Overall TINA gives a lot less convergence issues, so it may be something small like misspelling nets and PSpice will not converge. 

    To see if the issue you are having is related to the known bug we are actively working on fixing, please try running your simulation with a dual supply on the op amp. 

    If the dual supply converges, you may load the bias point in single supply and circumvent the convergence issue. 

    All the best,
    Carolina

  • 0
    Guru 140200 points

    Hi Bruno,

    make no mistake, creating a well running Spice macro-model IS rocket science. And I'm pretty sure that TI isn't willing to lift any of their secrets Relaxed

    Also, as the computations running during a simulation go beyond imagination a macro-model has always -unless the circuit behind is really really simple- be optimized and tested for the simulator being used. This because the simulators around work quite differently.

    The only tip I can give -unless you want to waste your time and energy- is to use the simulator the macro-model is developed, optimized and tested for Thumbsup

    Kai

  • 0 in reply to kai klaas69
    Guru 47975 points

    TINA V11 has some analysis options that sometimes help - I usually try changing the integration method and matrix solver from what they are to something else if offered (V9 does not offer this, but maybe your simulator does). 

  • +1
    Prodigy 200 points

    Ok my problems gone when I put the OPAMP in dual supply. But unfortunately one of my reason for simulating the circuit was about to verify its ability to perfom in single supply. Hope that TI spice modelers will be able to resolve this problem with the Green-Williams-Lis Op Amp Macro-model Architecture and PSPICE. Thank you all