NINA-B3 series - System integration manual
UBX-17056748 - R13
Design-in
Page 39 of 72
C1-Public
Figure 13: Extend GND plane outside the NINA-B3x6 module
Figure 14: Size of the GND cut out for the NINA-B3x6 module
3.4
Supply interfaces
3.4.1
Module supply design
For correct RF performance, a good connection of the module
VCC
pin with DC supply source is
necessary. Guidelines for the supply design are summarized below:
•
The VCC connection must be as wide and short as possible.
•
The VCC connection must be routed through a PCB area separated from sensitive analog signals
and sensitive functional units. It is a good practice to interpose at least one layer of PCB ground
between the VCC track and other signal routing.
8m
m
3,1mm
>10
>10
>10
