2009/08/30 at 3:44 pm
#24615
Mr-BParticipant
What happens when you load the input? try putting a resistor across the input (something around 10K ohms should be OK) then turn the gain up and see if the noise is still there, I don’t see how it could be ground related unless the noise were in the 50-100Hz region.
Do you have anything connected to this input?
