Better ADC Performance after Clone Printed Wiring Boards

Better Performance provided by ADC after Clone Printed Wiring Boards:

1, use a thoroughly and single grounding, don’t separate the grounding, and if there are multiple grounding planes in the multilayer Printed wiring board, then it must be controlled within 2 cm or shorter, use a through hole grid to connect them together;

2, separate the power supply ground, each power supply ground must be kept within the same layer, and the analog wiring power supply ground, digital wiring power supply ground and ADC digital output driver power supply plane must be separated when Cloning Printed Wiring Board;

3, ADC digital core power supply can use analog power supply but ADC digital driver shouldn’t use analog power supply;

4, ADC digital output driver power supply can use the same power supply as ADC output driving components;

5, All of the analog components and connecting line must be placed above the analog power supply ground plane, and all of the digital components and connected wirings line must be placed above the ground plane before reverse engineering Printed circuit boards;

6, Each ground planes use separated power supplies, and ADC digital output power supply can come from anyone of the power supplies but should use series current to decoupling the capacitance, ADC analog power supply is better use the linear power supply and voltage stabilizer.

7, if any one of the digital wirings power supply is same with ADC output driver power supply, and there is signal track to other areas of the printed wiring board, then among these two power supply PCBs there are no need to place the capacitors and these capacitors should be placed close to the signal lines when reverse engineering pwb board;

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