Reference Layout Changes in custom PCB

RE: Reference Layout Changes in custom PCB

Jared — Mon, 08 Jun 2020 07:00:06 GMT

I think that this is merely a decision based on cost. Through vias are less complex and therefore less costly, blind vias are used where it's needed.

RE: Reference Layout Changes in custom PCB

cheezballs — Sat, 06 Jun 2020 05:44:38 GMT

Thanks Jared!

This helps a lot. Just out of interest, I notice that through vias and blind vias are used throughout the Development Kit board for ground. What is the purpose/advantage of using a blind via over a a through via in such a design? I have attached a screenshot from the DK board which shows both types being used for ground.

RE: Reference Layout Changes in custom PCB

Jared — Fri, 05 Jun 2020 11:07:08 GMT

Hi,

This is fine for the GPIO pins.
You can remove the capacitor and ground the pin if you're not going to use the USB interface
Monopole antenna is usually the best choice. If you don't have room for that antenna then I would suggest an inverted F as the next best option. If you can't fit an inverted F antenna then I would suggest a Chip antenna.

regards

Jared