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The output data format of the ADC is two's complement.
The relationship between the input voltage and converted data depends on channel gain and common mode setting.
Assuming the gain of the channel is set at 0 dB (i.e. no gain in the path) with 0.75V common mode voltage setting, a single ended input of .375 Vrms (peak voltage = sqrt(2)*.375 = 0.53), result in a full-scale digital output. Signals above 0.375 Vrms get clipped.
Using 0.9V common mode voltage settings, an input of 0.5Vrms gets converted to full-scale digital output.
The channel output will also scale with channel gain. Using a 6 dB channel gain with 0.9V common mode, a 0.25 Vrms input converts to a full-scale digital output.
