Virtual ground simulation

Roff

Well-Known Member
This sim works with other op amps I have tried (only 2 or 3 others), but TL072 gets it all wrong, at least using the model that I have.
Has anyone else seen this?
 

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Roff said:
This sim works with other op amps I have tried (only 2 or 3 others), but TL072 gets it all wrong, at least using the model that I have.
Has anyone else seen this?
Click to expand...

hi Ron,
My model suffix is .301 from YLTS.
I got exactly the same result values as you did.

The only work around I could find, is the 'COM' symbol on the 072 output.

Eric
 

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Last edited:
Hi Eric,
SgtWookie on AAC found that TI had used GND (node 0) in their models. He changed them to the vee node, and all was well.
I believe SgtWookie also posts here, but under a different name.

Are you there, Wookie?
 
I've had the impression not, but if he does I would be interested in knowing.
 
Roff said:
Ahhh... I had never heard it called that.
Click to expand...

Hi,
Sorry Ron, I guess the txtspeak virus has infected my brain.

Did you get any further with a solution.? I think SgtWookie is aka on ETO as SgtWook
 
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