How can the power DTU acquisition circuit be kept away from interference sources?

To keep the DTU acquisition circuitry away from interference sources, it's essential to start with layout partitioning and shielding isolation. Allocate a separate area for the acquisition circuitry (such as ADCs and sensor interfaces), maintaining a distance of at least 20mm from interference sources (such as power modules and relays). During layout, place the acquisition circuitry near the signal input and the interference source near the system edge. Cover the acquisition circuitry with a metal shield, grounded. On the PCB, create a ground plane isolation strip with a width greater than 5mm between the acquisition circuitry and the interference source. Analyze electric field coupling through simulation and optimize the layout to ensure the coupling capacitance is less than 1pF. Measured noise at the acquisition circuitry should be below -60dBm. Moving the circuitry away from interference sources can improve acquisition accuracy by 0.5%.