Im currently trying to design a bandpass filter for a microphone.
I have downloaded TI's FilterPro app, but after building the circuit the result was bad. There is no output and i have gone over the wiring to check if it is correct.
I am testing the filter with a signal generator wit the current output; 50ohm, 500mv p-p.
hey, the only thing i can think of is that you have probably made a wiring mistake, check again thoroughly.If you have soldered the circuit, check for bad soldering connections..
most opamps require a +voltage and a -voltage to work correctly. check if that is fine...
The 5v supply may be a bit low for your op-amp, but the main problem is that you are using a uni-polar supply (0v and 5v).
With that circuit configuration you need a bipolar supply (-5v 0v +5v), connect the 0v of the supply to the common 0v line of the circuit, (where the op-amp non-inverting inputs are connected), then connect the supply -5v to the op-amp -ve connections and the +5v to the op-amp +ve connections.
As designed by FilterPro, the opamps expect split supplies. If you are running it on a single 5V supply, it will not work. You can offset the non-inverting inputs to a well bypassed midpoint on a voltage divider tied between Vdd and ground, and then capacitively couple the input signal into the first stage.