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Original question:

OPA810: Not able to place the part or simulate in PSpice for TI

OPA810: Unable to use part in PSpice for TI. Error viewing PSpice model and unable to run simulation

Mark M.
Intellectual 255 points
Part Number: OPA810

I am unable to use OPA810 in PSpice for TI. When I add OPA810 from the PSpice part search, simulations fail with the following error:

ERROR(ORPSIM-15108): Subcircuit OPA810 used by X_U4 is undefined

When I right click on OPA810 and select "View PSpice model", I receive this error:

ERROR(ORCAP-2448): The model OPA810 could not be found in the configured libraries.

The design cache is referencing the the OLB file here: C:\cds_spb_home\cdssetup\pspTILibDir\OPA810.olb

Everything works fine when I load the Model Test Circuit for the OPA810. One difference with the Model Test Circuit is that the OPA810 is listed under the Library folder also. I tried adding the same OPA810 file to my project's Library folder but that did not correct the problem.

System details:

  • PSpice for TI version: 17.4-2021 S007 Windows SPB 64-bit edition
  • Model Library version: 2022-01-19T17:45:12-06:00
  • OS: Windows 10 Pro

It appears that the references for this part are not loading properly from the TI Model Library. I am new to PSpice and do not know how these files work together nor how they should be referenced. I do not encounter this problem when adding other parts. 

This other forum post below appeared to have a similar issue but I do not know how to import a 3rd party model and I would prefer to use the built-in TI model to avoid the 3 waveform limitation. 

https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/991764/opa810-not-able-to-place-the-part-or-simulate-in-pspice-for-ti

Any suggestions on how to fix this error are appreciated. 

 

  • 0
    TI__Mastermind 28865 points

    Hello Mark,

      Thanks for bringing this to our attention. It does seem to still show the same error on my end as well. The fix on the previous update -- as you have shown via previous thread -- might have been lost in the future updates. Currently working on a fix, and will get back to you shortly. 

    Thank you,

    Sima 

  • 0
    TI__Mastermind 28865 points

     Hello Mark,

      Also, thanks for looking for previous solutions on e2e! I believe I found the issue. The folder that can be found on the local hardware (C:\SPB_Data\cdssetup\pspTILibDir), has OPA810_a.lib, but is missing the pointer file: OPA810_a.libsig. I will inform the modeling team on the fix for the next update.

      In the meantime, I found a workaround other than importing the netlist as a third party model. 

    1. Search for OPA810 in the PSpice Part Search (as normal)
    2. Right click on the part name. But instead of selecting place symbol, select open model test circuit, and then click on PSpice Model for Curated TI Library 
    3. This will automatically create and open a project in C:\cds_spb_home\cdssetup\pspTILibDir\ReferenceDesign
    4. You can now edit or immediately run the provided circuit/simulation.

      Sorry for the roundabout way of making this work. I will work with the modeling team to update this asap. 

    Thank you,
    Sima

  • 0 in reply to Sima Jalaleddine
    Intellectual 255 points

    Hello Sima,

    Thank you for the suggested workaround but there appears to still be an issue. When I follow your steps and simulate the OPA810 model test circuit, everything works as expected. But, if I copy the OPA810 or add my circuit to the schematic I get a notification about using third-party devices. 

    Are you able to recreate this behavior on your end?

    Thanks,
    Mark

  • 0 in reply to Mark M.
    TI__Mastermind 28865 points

    Hello Mark,

      Unfortunately, that does seem to be the case. I tested editing the reference circuit, and it gave me the same third-party notification. I will let you know as soon as the update for fixing the original OPA810 issue rolls to the public; it should be an easy fix on the modeling team end.

    Thank you,

    Sima 

  • +1 in reply to Mark M.
    TI__Mastermind 28865 points

    Hello Mark,

      Thank you for your patience on this issue. We ran into a few problems, but it should be fully resolved now. I have attached the example OPA810 PSpice for TI project below. Let us know if you have further questions or concerns.

    OPA810_Test-PSpiceFiles.zip

    Thanks,

    Sima 

  • 0 in reply to Sima Jalaleddine
    Intellectual 255 points

    Thanks Sima. I've confirmed that I can simulate OPA810 on my end after the latest library update. Thanks for the help. 

  • 0 in reply to Mark M.
    TI__Mastermind 28865 points

    Hello Mark, I am glad it works. Thank you for the confirmation.