Hello-
I have found out that some prototype boards I had built were a different stackup than what I initially expected when I used the Spiral_Inductor_Designer LDC Tools excel sheet to help with my design. I wanted to go back and recalculate my fsensor, Q factor, inductance, and resistance with what was actually built in the prototype. In doing so, I found that all of the values stayed within range of what TI deems 'acceptable' except for the Q factor. I calculated a Q factor of 36 (datasheet recommends we stay between 5-30).
Can someone explain to me what the consequences would be of having a design with a Q factor of 36 as opposed to one with 26? How would this impact my sensor performance? Would this induce extra noise? The other factors (inductance, frequency, etc.) are all as expected and within range. When I measure and use the prototype board (with the calculated 36 Q factor) I am not seeing anything out of the ordinary. I am getting ready to spin the boards and need to know if I should tweak the Q factor to fall within the recommended range- and would like to understand why I would want to tweak it (what am I preventing that would happen at Q=36)?
Thank you!
