Dear Nordic,
I am currently integrating nRF7002 into one of the hardwares. I am trying to make the PCB as compact as possible so it looks amendment to the reference layout is inevitable. There are some details on layout that I would like to confirm before I conduct practical changes.
QFN package is my choice, below is the screenshot of the QFN reference circuit from product specification:
My questions are:
1) What is the actual maximum current that goes through L1 inductor? So I can know if I had a chance to use a smaller inductor form factor.
2) C8 decoupling capacitor on BUCKVMID pin. How sensitive this pin is to PCB parametric? As I may need to move C8 to another side of PCB but I am not sure how much the so-introduced capacitance due to extra via that may impact.
3) X1 crystal. This crystal's spec states its load capacitor is 8pF. Though I did not find the presence of load capacitors in circuit. Is that because the load caps are integrated in nRF7002 or in the crystal? This part is not very available in my local supply channels so I may need to find an alternative part. Should 8pF caps then be presented for other parts?
Many thanks.
/Roland