Hi All,
The customer is using the FDC1004 try to use CAPDAC to expand the range of each channel equivalent capacitance.
When they set the CHB to "Disabled", the value as below:
CIN1=0.666 pF
CIN2=0.428 pF
CIN3=0.169 pF
After setting the CHB to CAPDAC but remain the CAPDAC as "0", all the measurement increase and measurement "3" is increase sharply.
CIN1=0.899
CIN2=0.785
CIN3=1.265
They only change the GUI, the hardware part remain.
What would cause this phenomenon?
Please kindly share your comment.
BRs
Evan
