B1 pin and 74 pin connection nRF52840

[astella]

To the kind attention of Nordic support team,

It seems that pin 74 (Die pad) should be ground and C14 not directly connected to ground, but using a line to pin 74. Right? You also stress that this is very important for C3.

So, I would ask if this is very important for C14 capacitor as well, and what kind of instability, if any, we could expect if not doing so.

(https://infocenter.nordicsemi.com/pdf/nRF52840_PS_v1.7.pdf reference circuit n3)

 

Best regards

[ketiljo]

C3 is the only capacitor where the ground is not standard. All other components should be connected directly to the ground plane for the best grounding possible.