Tool/software:
Hello,
I would like some help to verify if there is any issue with how the LDC0851 circuit is designed. I have uploaded the schematic and gerber files.
We have assembled the board and components. The output is always high (3.3V) even when a metal is directly touching the coil
We placed the Lsense coil on the bottom layer and inner 2 layer (layer just above bottom layer) since we will be mounting the board on a flat surface.
The LREF coil is on the top layer and inner 1 layer (layer just below the top layer).
I followed the coil design webbench and used a coil generator plugin for Kicad.
16mm outer diameter, 15 turns, 0.178mm trace width and 0.178mm trace spacing
1oz copper and the resulting inductance should be 9.075uH
Top and Bottom Layer have counter clockwise coil direction
Inner Layers have clockwise coil direction.
Thanks,
Deniel