Hello, first I will say that I'm not an expert in opamp filter design. In fact I would say that I barely know the basics. That is why when I found the analog filter wizard it fit perfectly with what I was trying to do - which is create a bandpass filter for a 3khz audio signal that I'm trying to isolate. The wizard gave me this schematic:
So I bought the EVAL boards and all the parts to be able to test this design. Now I'm finding that the first and second stage do nothing but oscillate (3Khz for the first, 28khz for the second) - no matter what I do! Is there something that I'm doing wrong? Just to check the schematic I've also simulated it in LTSpice and it should function, but my reality is different... Help!