Problem with TI OPA140 Spice Model

[EDL1]

I have edited the attached spice model to fix the missing parenthesis, but when I try to create a symbol linked to the model I get an error "This model contains multiple top-level .SUBCKT statements...". I have tried nesting the subcircuits inside the main circuit model but I cannot get an accurate simulation (Transient works, AC Sweep is bizarre). How should a spice model with multiple .SUBCKT statements be handled in Multisim? Thanks, Tim

[Tien_P]

Hi EDL,

The SPICE file is not attached, please post again.

[Tien_P]

Hi EDL,

The SPICE file is not attached, please post again.

[EDL1]

Sorry. Try this one... Tim

[EDL1]

OK...This is odd.  Trying to attach the file again

[Tien_P]

Hi EDL,

I didn't make any changes to your model and it works in the component I created.

[EDL1]

Yes it does.  I wonder what I was doing wrong.

Thanks.  I'm going to try another one...

Tim

[EDL1]

I tried it again using the file I sent you.  At step 5 of 7 it still gived me the same error about multiple top-level .subckt statements. 

[EDL1]

OK...more playing.  I get the same error message with the OPA209 and OPA320s models.  The OPA725 works, but it doesn't have multiple .SUBCKT ststements.  I just did that one as a sanity check.

Since you were able to make the model of the OPA140 (and I checked...the model I sent you is really in the part you sent back 🙂 there mult be something different in my setup.  I just don't know what.

Tim

[Tien_P]

Hi EDL,

Post the Multisim file with the part you created, I can look at how you made the component and let you know what went wrong.