How to reduce the digital -PCB Assembly China-4
If the system is only one A / D converter is very easy to solve the above problems.PCB Assembly Shown in Figure 3, will to separate, in the A / D converter following the simulation and digital ground parts connected together. Adopt this method, PCB Assembly China you must ensure that the connection between the two to the width of the bridge width and IC, and can not be any signal line across the split gap.
If the A / D converter more, such as 10 A / D converter how to connect it? PCBA manufacturer If each A / D converter will be simulated in the following figures are linked together and are more connected generation, simulation and digital ground isolation between the meaningless. And if not this connection, in violation of the requirements of manufacturers.
The best way is to start with the uniform. PCB Assembly Shown in Figure 4, will be divided into a unified simulation part and digital part. This layout IC device manufacturers to meet both the simulation and digital ground pin low-impedance connection request, while not form a loop antenna or dipole antenna EMC problems arise.