Tool/software: TINA-TI or Spice Models
Hi,
I'm simulating a voltage to voltage and current circuit. With isolator ISO224 between INA and OPA. The whole flow is INA188->ISO224->OPA188->XTR305.
When I run DC simulation, it came out the problem "operation point not found" ,so I could not get the result.
Could you please tell me how I should modify it?
Thank you.
Hi Candy,
The error is coming because:
1. The circuit is missing the ground connection 0V as shown in the image below.
2. The bottom circuitry of XTR305.
Please find the attached updated schematic and let us know if you need any further assistance.
Thanks,
Vivek Agarwal
Hi Vivek,
Thank you for your help.
Yet, the problem still exist.
When I run DC nodal voltages of the schematic you gave me, it still pop up the following warning.
Thank you.
Best Regards,
Cindy
Hi Cindy,
I faced the same issue in newest version v9.3.200.277 SF-TI.
However, issue get resolved by changing the simulation parameters as shown below.
Thanks,
Vivek Agarwal
