Wiring Constraints: Power
Pay attention to the decoupling and filtering of the power supply to prevent interference from different units through the power cord. The power cords should be isolated from each other when wiring the power supply. The power line is isolated from other strong interference lines (such as CLK) with the ground wire. The power wiring of the small signal amplifier needs to be isolated by ground copper and ground vias to prevent other EMI interference from entering, thereby deteriorating the signal quality of this level. Different power layers should avoid overlapping in space. The main purpose is to reduce the interference between different power supplies, especially between some power supplies with large voltage differences, the overlapping problem of the power supply plane must be avoided.