In the NUCLEO-WL5JC (MB1389) schematic, is the RFO-LP pin connected to a resistor or an inductor?

[Levan]

Hi all,
The STM32WLE MCU's wireless part features two output pins, one for high power and another for low power.
In the schematic diagram, both of these pins are linked to inductors: RFO_LP connects to L10, and RFO_HP connects to L9.
It's worth noting that in the L9 position on the schematic, there is a 0-ohm resistor.
After reviewing alternative schematic versions, such as the lowband variant, I observed that both pins are associated with inductors, but their part numbers correspond to 0-ohm resistors.
Can someone clarify whether L9 should contain an inductor or a resistor, and if it's an inductor, what should its nominal value be?

[STTwo-32 · Accepted solution]

Hello @Levan and welcome to the ST Community :smiling_face_with_smiling_eyes:

the L9 connected to the RFO_HP contain always a resistor (for both High and Low bands and for both revisions (the D04 and the E02)). But, for the L10 wish is connected to the RFO_LP contain a resistor for the Low band revisions and an inductor for the High band revisions. For more details about the components, i suggest you take a look at the Bill of materials of the board reference you are looking for. 

Best regards.

STTwo-32