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TINA-TI: Operating Point Not Found Error

Part Number: TINA-TI

Hi Team,

I am simulating an opamp circuit in TINA-TI. I am facing the below issues. Please advise.

1. The simulation(Transient/AC Analysis) takes a long time to run (nearly 45mins to 1Hrs). For this small circuit, will it take such a long time?

2.  At the end, I am getting this error (U3.DINN). How to resolve this error?  

3. In which scenario this error comes?