OPA2197: Pspice model question for OPA2197

Hi HongGyo,

I consulted the issues with our modeling engineer, here is a work around. 

Please check the box as highlighted in the image below under Simulation Settings - Trans:

OPA197 simulation is working, IF the feedback resistance is lower, say 250Ohms instead of 1k Ohms, without the need for auto-convergence setup or the above SKIPBP option seen above. OR increase the feedback resistor from 1kohms  to 1MEG Ohms, the simulation works as well. 

Another tip for a single supply rail op amp configuration: change the Vee from 0V to say -1mVdc, then the convergence happens very fast. I think the issue is related to claw curve block trying the equalize the current to ground node through 1k and high-impedance node through IN- node.

Enclosed are some tips about convergence issues in working with PSpice. 

CDS_Support_PSpice_HowToResolveConvergenceError.pdf

If you have additional questions, please let us know. 

Best,

Raymond

Hi Raymond

thank you for your support.
I've tried running it according to your description, but it's still shutting down the same.
The circuit I executed and the setting conditions are shown in the figure below.

Please review the problem by downloading the file uploaded to the TI web.
Personally, I don't quite understand.
I am running the file uploaded from TI without modification, but it is not working.

No user modifications have been made.

It seems necessary to download the uploaded file again and check whether there is any problem.

Thank you for your help.
Still have the same problem.
Please download the file posted on the TI web and review the problem.

feedback resistor = 500ohm

SKIPBP option check

Hi HongGyo,

I just download the exact model from the sboma34c.zip file again and upload the *.DSN, I do not see the issues that you reported, where I configure Vee from -18V to -15V, -1V, -100mV, -10mV and 0mV.  

I also increase Vin+ bias voltage from 0V to 0.5V, so that the input Vcm is operating in a linear range. 

Could you try it again and see if there are any issues with single supply rail. 

Best,

Raymond

Hi Raymond

If you unzip the file received from the TI web and run it, the symptoms of shutdown are the same.
I had other people get the opa2197 zip file from the TI web and run it.
Other people's PCs were shut down in the same way.
Download the file from the TI web and try it.

Also I tried: Then the problem was solved.
I created a new folder in PSpice for TI tool and then created a new project. Then, I drew the same circuit as the opa2197 example file and executed it.
It ran fine with no problems.

I don't know what the difference is.
If I receive it from TI Web, shut down symptoms occur, and when I create and run a new project, there is no problem.
I've tried this workaround for others as well. It worked equally well on other people's pc.
I hope you download the opa2197 simulation file from the TI web and try it out.
I'm sure someone will experience the same symptoms as me.

Best regards
HongGyo