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Hi Team,
I downloaded the OPA820 spice model, in order to use it with LTSPICE.
Working within the datasheet conditions: GAIN=+2, Vout=2Vpp, Supply +/-5V, I have a distorted signal at 10MHz.
Do you know if the pspice model is correct?
Let me know if you want to take this offline.
Best Regards
Riccardo
Hi Riccardo,
TINA-TI shows the same:
Seems to be related to a limited slew rate:
Yes, the OPAmp seems to be slower in the simulation than specified in the datasheet.
Kai
Looks right Kai, the model does show about 100V/usec negative going slew rate - This old model by Rea Schmid might have been in error, but the online reference design shows the same thing,
I did use the OPA820 as a vehicle to show how to map LSBW to SR, I did not try the TINA model at that time so I missed this. the 2nd half of this article where I came up with a new mapping methodology for non - slew enhanced VFA like this one.
