I want to used LDC0851HDSGR in our design with 2 sense coil in our 22 layers PCB design. Reference coil and sense coil are not stacked and sense coil to be made at the diagonal end on the PCB. I have some query which are as follows:-
1) For 22 layers PCB, we will make coils in top and bottom layers only and remove the copper plane and traces from all in between layers. Please let us know if it is OK or it will have any issue?
2) If it is OK then please let us know how to design coil and what should be the minimum separation of sense coil / trace between sense coil to all other traces.
Santosh Kr. Singh