I am considering the following lowpass Sallen & Key filter:
My components are the following
- \$R_1=10 k\Omega\$
- \$R_2=10 k\Omega\$
- \$C_1=150 nF\$
- \$C_2=1.65 nF\$
Now I have performed a complementary transformation to obtain a Bandpass filter. Here is the schematic on LTSpice
It doesn't look at all like a bandpass filter. It looks like a low pass one, but I know that is because of the OPAMP own frequency response. What went wrong with my simulation, why is this happening?