1.The clock circuit and the high frequency circuit are the main sources of interference and radiation, and must be arranged separately from the sensitive circuit.
2.Note the waveform distortion during long line transmission
3.The best way to reduce the loop area of the interference source and the sensitive circuit is to use twisted pair and shielded wires to twist the signal line with the ground wire (or current-carrying circuit) so that the signal is closely connected to the ground wire (or Current-carrying circuit).
4.Increasing the distance between the lines so that the mutual inductance between the interference source and the induced line is as small as possible.
5. If possible, making the line of the interference source and the sensing line at right angles (or close to the right angle) wiring, which can greatly reduce the coupling between the two lines.
6.Increasing the distance between the lines is the best way to reduce the capacitive coupling.
Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.