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STM32WB5MMG RF_Out & ANT_IN Pins are NOT grounded

bluepcb
Associate

‎2024-10-31 02:40 PM

Hi Everyone! 

So yeah, as the title says, while designing the PCB, we forgot to ground RF_Out and ANT_IN pins of STM32WB5MMGH6T6, datasheet says we should have, because there is no external antenna. We have noticed it when we tried to run our codes to connect Bluetooth but nothing worked. 

 

So I am not sure if it is the reason and if it is the reason, is it possible to take the BLE module off with hotair and short circuit unconnected pads to neighboring GND pads?

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STTwo-32
ST Employee

‎2024-11-01 09:45 AM

Hello @bluepcb and welcome to the ST Community.

As described in DS the ANT_IN and RF_OUT should be connected to GND. It may be some issues will not be grounding those pins.

For removing the Module, you may need to ask an HW expert (unfortunately I'm not).

Best Regards.

STTwo-32

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