Hi Yohannes,

     The 3X3 antenna matrix for AoA is in developing, but still not available till now. Please issue a Saleforce ticket for this request. It is a good idea to contact your local Silabs sales man or FAE to evaluate your request.

Regards,

Jun

Hi MK,

    For your questions, please refer to below answers:

1. Yes, the chip can support both modulation of Zigbee and BLE protocol.

2. I don't think there is 802.11n protocol in these module.

3. No for these modules.

Regards,

Jun

Hi Mohan,

     Yes, I think it is right as long as your battery's voltage is in the operation range with full capacity discharged.

Regards,

Jun

Hi Dirk,

      Did you remove the debug connector from Thunderboard? If not, please remove it since the possible power conflicts between batter power and debug connector power. And more, did you measure VMCU on the board? Is it still valid?

Regards,

Jun

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