**Part Number:**LDC3114

Hello,

I performed a test using LDC3114 to measure the distance from the coil to a metal target. I am now trying to create a curve fitting between the distance value and raw digital output. I tried to use a polynomial equation and sigmoid function, and the best I get so far is a generalized sigmoid function, the result looks like below. the x-axis is the distance, and y is the raw digital output from LDC3114. I am not satisfied with the result since there is still systematic error. Is there any other equation that would better fit such a result?