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TINA-TI: Significant difference between Tina-TI and Spice model

Dominik Lorenz25
Prodigy 140 points
Part Number: TINA-TI
Other Parts Discussed in Thread: LM358

Hi there,

i just tried to simulate the LM358 and encountered some problems. After some tries, i found out that the model included in TINA-TI and the SPICE Model that can be found at the product page is very different. I thought that the TI-tool should simulate the part from TI better, but simulating with LTSpice, i get exactly the resut from the datasheet, whereas with TINA-Ti i get something very different.

here the Simulations:

result:

Tina with LM358.

result:

with the output oscillating.

According to the Datasheet, the output should look like this:

I find these results troubleing. Can i use the Spice-Model for simulation? Why is the model in TI-Tina so off? Did I choose the wrong part (I also tried the LM358/101)? I have the strong feeling that i made a mistake setting up the simulation in TI-Tina. Please find attached both simulations.

simulatoins.zip

  • 0
    TI__Expert 6625 points

    Hi Dominik,

    Our PSPICE code is usually generated from our TINA macromodel. So it is odd that the results don't match. I will go ahead and test the PSPICE and macromodel again to see what's causing this difference. If I don't get back to you by end of today then I will follow-up with you on Tuesday. 

    Best Regards,

    Bala Ravi

  • 0 in reply to Bala Ravi
    TI__Expert 6625 points

    Hi Dominik,

    Looks like you somehow found the older LM358 TINA-TI model. Did you download it from our product folder: http://www.ti.com/product/LM358/toolssoftware ? 

    Once I replaced your circuit with our latest TINA-TI macromodel, your circuit worked fine. Please find below: 

    I've also attached the edited TINA-TI file for your reference: Test mit Tina_TI.TSC

    Best Regards,

    Bala Ravi

  • 0 in reply to Bala Ravi
    Prodigy 140 points

    Hi Bala,

    I did not download the LM358 Model, I took the one that comes integrated with TI-Tina in the current version. Glad you found the issue.

    Thanks,

    Dominik