I am using AD7685, and the mode is CS Mode 3-Wire with Busy.
In this mode, SDO goes high because it is a pull-up when the analog to digital conversion starts.
In the data sheet, the pull-up of SDO is 47KΩ.
In the pull-up of 47KΩ, it goes slowly high.
In the pull-up of 4.7KΩ, it is improved.
However, the response is still smooth.
Could you tell me the value of a correct pull-up resistor?