So I have read a number of documentation such as the datasheet, the circuit note CN-0129, and the EVAL board doc, but I still have a question about this specific component - AD7746: 24-bit Capacitance-to-Digital (CDC) Converter.
How do I find/calculate the calibration factor stated in CN-0129? There is a constant GAIN_CAL, which is a factory calibrated constant. Later in the document, it states it can be calculated. So I am confused. Is the number given "24509" (0x5FBD) the factory calibrated constant or a value that needs to be calculated? If it is calculated, how do I do so? If not, what is this constant?
Thank you very much.