So I have this simple OP-AMP circuit that is supposed to be a low-pass filter for which I made the calculations so it passes all frequencies below 1591 Hz (approx). The values of the components are in the image.
However, the frequency response in my simulation program (LTSpice) is way higher (two orders of magnitude!) above my theoretical ones.
To make it even funnier, empirically I got the correct frequency response (in a bread board with an LT1013 Amp) so what's wrong in my simulation?
For Circuitlab I got the expected output as well. Same circuit. Is LTSpice that bad?