Would you tell me the output data value of AD9250 when it is Overrange or underrange.
For example , if it is overrange , is it a value stuck with the maximum value of the setting output format?
Your understanding is correct. The digital code will remain at the code (2's complement vs unipolar) that represents +F.S. or -F.S during the duration that the input signal over or under ranges these full-scale limits. For example, if the ADC is configured for 2 Vpp input scale range than the +F.S. and -FS. are +1 V and -1 V respectively.
Retrieving data ...