Thanks for your response.
Please correct me if I am wrong. Shielded/unshielded twisted pair requires differential signal with current flows in opposite direction in order for the cancelling effect to take place, which leads us back to my original question. How would ones generate differential signal out of a single ended signal? Thanks.
Just route both wires to ADC channels, read both and take the difference. Any voltage drop
in the supply ground to the sensor will be compensated for this way. Depending on the
bandwidth you want add some capacitance across the wires at the receiving end. Basically
have separate signal and supply ground wires, and connect them only at the sensor (sending
end). Twisted pair for signal / signal-ground, twisted pair for supply / supply-ground should
In a an electronically noisy environment (lots of motors, mains etc) then a better scheme
may be needed (generate true differential signal, or put an ADC at the sensor end so only
need to send digital signals).