User's Manual

SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R18 Advance Information Design-in
Page 142 of 206
For additional guidelines regarding the design of applications with u-blox 3.0 V GNSS receivers see the GNSS
Implementation Application Note [27] and to the Hardware Integration Manual of the u-blox GNSS receivers.
2.6.4.2 Guidelines for DDC (I
2
C) layout design
The DDC (I
2
C) serial interface requires the same consideration regarding electro-magnetic interference as any
other digital interface. Keep the traces short and avoid coupling with RF line or sensitive analog inputs, since the
signals can cause the radiation of some harmonics of the digital data frequency.