u-blox UBX-G7020 - Page 14

UBX-G7020 - Hardware Integration Manual
Design-in
GPS.G7-HW-10003 Objective Specification Page 14 of 74
2.1.2.4 VDD_ANA and VDD_LNA
VDD_ANA is the supply for all the analogue parts in the UBX-G7020. VDD_LNA is the supply for the low noise
amplifier inside the UBX-G7020.
VDD_ANA and VDD_LNA must be supplied by VDD_RF_OUT. If a clean power supply cannot be provided at
V_CORE (which supplies the LDO_RF), it is recommended to add external filtering (FB1 and C3) to supply
VDD_ANA/ VDD_LNA.
Figure 5: Filtering for VDD_LNA and VDD_ANA
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