nRF51x22-ceaa Reference Design

[eck]

I can not find information about layer stack-up and whether the via-in-pads were filled, please provide this information. We are thinking about a variant with thin outer layers to make the filling of the via-in-pads unnecessary.

[Susheel Nuguru]

Via in pads must be filled. When using a balun, the stack-up doesn’t matter. Just set the second layer as ground.

[eck]

Anyway I would like to know which stack up was used for the reference design. Please provide us with this information.