AnsweredAssumed Answered

Difference between LTspice and genesys linear simulation

Question asked by gefeba on Dec 11, 2014
Latest reply on Jan 6, 2015 by relange
Dear all,

I'm starting with Genesys and the first thing I wanted to do was to import my OpAmp's ltspice model into Genesys and use it in my designs. I've done that already but after performing a linear simulation with it I realized that the response I get with Genesys is not the same as with Ltspice, even using the same parameters/components. 

You can find attach pictures of the schematic in LTSpice and Genesys and also the curves of the transfer function (or S21 parameters) of the design.

The gain is clearly different and the same goes for the shape of the curve (with a ripple in LTspice not present in Genesys). 

Since we bought Genesys in order to increase the accuracy of our simulations before building prototypes, solving this issue is fundamental.

Maybe there is something I'm missing here about how the input and output ports of Genesys actually work... and that's the reason for the discrepancy.

Thanks a lot in advance.

Best regards.