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CCS/CC2640R2F: CC2640R2FRHB bluetooth signal problem

AndongSun
Intellectual 600 points
Part Number: CC2640R2F

Tool/software: Code Composer Studio

Based on CC2640R2FRHB + balf-cc26-05d3, after the PCBA came out, after debugging, it was found that there was no bluetooth signal.

The follow pic is the schematic diagram and PCB layout of related parts. Could you please help to check whether there is any problem with this part?

Thx.

  • 0
    TI__Guru**** 317180 points
    Have you verified by using the rfCarrierWave example that you don't get a signal?

    This is a balun that we have not tested. Reading the datasheet it's not clear how you need to use this balun. The schematic indicate that the pin VCC should be connected to RX_TX pin, the pin description indicate VCC.

    In addition see e2e.ti.com/.../683012