Ok, I'm a bit confused. I thought a 15k resistor to the U3 non inverting input would eliminate the cross talk?
I need to eliminate the crosstalk because I need to measure the analog voltage going in to the U3 inverting input to bench test it accurately. Right now I get large voltage fluctuations and I am not able to measure the voltage going in because of that on my multimeter. I was able to watch the ~2.25hz square wave change its pulse width by varying the output from the potentiometer to the U3 inverting input, but I had no idea (per my multimeter) how much voltage I was actually giving the U3 inverting input, as it oscillated all over the place. I need to get rid of that crosstalk oscillation so that I can measure that accurately. If this resistor won't do it, can I isolate it somehow or how can I eliminate the crosstalk entirely? The lm324 did not seem to suffer from this, but it was not rail to rail like this IC is and I need rail to rail.
Thank you for helping.
I need to eliminate the crosstalk because I need to measure the analog voltage going in to the U3 inverting input to bench test it accurately. Right now I get large voltage fluctuations and I am not able to measure the voltage going in because of that on my multimeter. I was able to watch the ~2.25hz square wave change its pulse width by varying the output from the potentiometer to the U3 inverting input, but I had no idea (per my multimeter) how much voltage I was actually giving the U3 inverting input, as it oscillated all over the place. I need to get rid of that crosstalk oscillation so that I can measure that accurately. If this resistor won't do it, can I isolate it somehow or how can I eliminate the crosstalk entirely? The lm324 did not seem to suffer from this, but it was not rail to rail like this IC is and I need rail to rail.
Thank you for helping.