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Third party model usage - please help

 

Hello,
I'm trying to use the National LMC6484A opamp model in LTSpice.
I've downloaded their model and placed it
into ..\LTC\SWCADIII\lib\sub directory under the name LMC6484A.sub.
Then I created a simple test schematic where I used opamp2 symbol with
Prefix = X, Spice Model = LMC6484A.sub, Value = LMC6484A.sub
properties.
I've also added the .inc LMC6484A.sub directive to the netlist.

Running the simulation produces the following error message:
Error: Unknown subckt called in: xu1 ...... lmc6484a.sub lmc 6484a.sub

What am I doing wrong?

Thanks,
Eugene.
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