Hello;
I use FDC2112 to measure multilayer capacitance.
Firstly, I connect 100pF capacitor differential mode like figure 55 on datasheet. It is ok. The measurement is true. Secondly I connect one more 100pF on paralell.
So my reading value must be 200pF. Yes it is.
The problem is with single ended confeguration.
When I connect 100pF, reading value is 50pF. when i connect two 100pF capacitor in paralell reading value less than 20pF.
What is my fault.
Regards,