Hi, I designed a 8th pole sallen key filter with the filter wizard.
here is what I get from filter wizard.
I realize this schematic in OrCad
and finally I designed the layout
But, if I feed a sinusoidal signal to the input of this filter I get this situation.
I check all the metal connection on the board. power supply is present and gnd is correctly connected.
If I also try to simulate this circuit in LTSpice
I get this situation
where the green track is the input and the blue one is the output.
In the datasheet I read that this opamp could work at +5V single power supply but it is not working as expected.
Do you have any suggestion?
Thank you for your support