I want to use the system CN0185 specifically the filter at the end for a school project but i cant seem to open it and it only shows me this error message:

What can i do in this situation?
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AD8646
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The AD8646 and the AD8647 are the dual, and the AD8648 is
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I want to use the system CN0185 specifically the filter at the end for a school project but i cant seem to open it and it only shows me this error message:

What can i do in this situation?
PaulCA - Moved from Differential Amplifiers & ADC Drivers to LTspice. Post date updated from Saturday, January 17, 2026 1:00 PM UTC to Tuesday, January 20, 2026 12:47 AM UTC to reflect the move.
PaulCA - Moved from Differential Amplifiers & ADC Drivers to LTspice. Post date updated from Tuesday, January 20, 2026 12:47 AM UTC to Tuesday, January 20, 2026 12:47 AM UTC to reflect the move.
AndrewDide Unfortunately, that .asc file in the CN0185 file package is a PADs file: https://help.solidworks.com/2022/English/SolidWorks/circuitworks/c_pads_ascii_format.htm
That said, we have a fiew tools that might help you create a schematic that can be exported to LTspice.
- https://tools.analog.com/en/filterwizard/
- https://tools.analog.com/en/signalchaindesigner/
If you want to try to build this circuit using Filter Wizard, the circuit note gives some clues about what the parameters to give Filter Wizard:

Then - in the components selection view, change the supplies to a single 5V supply, and change out the automatically chosen op amps with the AD8646:

Keep working on your design, until you are ready to generate LTspice files at the last tab view:

Hopefully this helps you make some progress.
-Anne