We are designing analog input with RC low-pass filter and we want to be able to disconnect the filter if needed. So we came up with these two options. 1st option has jumper at the right side and has twice as much inputs because you literally have to disconnect the wire of the input and connect it for example from IN1 to IN2.
The second design has only one input IN but we are concerned that if op-amp is used the wire above it might bring a lot of disturbances from the air... Also we are concerned about current which might flow in the op-amp output or (-).
Well what do you think?