Hi Rui,

     You can find the files in the related website as following: https://www.silabs.com/support/resources.ct-schematic-and-layout-files.p-wireless_bluetooth-low-energy_efr32bg22-series-2-socs.page=1. Please contact your local sales or FAE if you can't find the latest file.

Regards,

Jun

Hi Filippo,

    Yes, you can only connect VMCU to your custom board. For external debug connector, you should connect the GPIO's reference voltage(this voltage can be 3.3V or 1.8V) to 'VTARGET' pin.

Regards,

Jun

Hi Titus,

     This GND trace is connected to antenna ground pin #53, and it composes a ground loop for antenna resonating in this component layer. And it can't be removed, please read the datasheet for more PCB layout guidance.

Regards,

Jun

Hi Davide,

      It is OK. You can send me one fault chip if you have more.

Thanks,

Jun

Hi Davide,

     I have done the open circuits PA aging test these days, and found no issue related to PA damaged. So there are some other possible reason why the chip's PA is down. I recommend you to contact your local Silabs' salesman to help you with RMA process if you found several chips are fault.

Regards,

Jun

Hi Davide,

    Thank you. Would you like to try soldering the bad chip in a good board? It will find out where the problem lie in? The chip or the board?

Thanks,

Jun

Hi Davide,

     It is possible to send us the bad sample for further analyse?

Regards,

Jun

Hi,

    The internal PA circuits are not easily to break down even if you put the RF port in open or short. It is good to check some more boards to address this problem.The ESD may also damage the RF circuits anyway as you know. And may I know where the damage is? In Tx path or Rx path. I think we can do some more experiments based on your detail information.

Regards,

Jun

Hi Andrew,

      Sorry, I can't find the detail data in Silabs RFI database. Actually the output power VS. temperature performance are very similar over the whole frequency bands. The power ramps down 2dB from -40 degree to +80 degree. So you can calculate -0.0167dB/C slope, and it is quite accurate. So I think you can just use this slope for the power calculation in the whole frequency and temperature range.

Regards,

Jun

Hi ,

     If you use MGM210Px32 module, the PA supply voltage should be set to 3300 for +20dBm output power, and it should be 1800 for MGM210Px22 module with +10dBm output power. I think the voltage is set automatically in the default source code, please don't try to change it.

Regards,

Jun