Hi TI,
I am using the LDC1000EVM and clearly the PCB coil has a limited sensing distance. I am plan to use a PCB coil large enough to sense a metal object that could be 6'' away that has a target diameter between 2 and 3.5 feet. Using the Webench tool (www.ti.com/.../inductive-sensing.page), I am unable to input diameters greater than 7cm. It seems I would need a coil that has an inductance greater than 300uF and ~170 turns, best guess. Is there another Webench tool I can use to make the calculation for me?
Would a 100nF capacitor suffice for a design of this type?