Thanks for your response, but I'm not sure I accept your statement that the Noise Figure is independent of the chip settings. Your AD Converter is an over-sampling type and the filters following it are selecting a portion of the noise spectrum to include in the channel, ... this is the principle of Sigma-Delta Converters. In addition, there is the programmable filter bank prior to the AD Converter which will also affect the channel bandwidth and hence the noise. I don't see how the specified numbers can be verified without the chip configuration settings.
All references that I find to ADC NF base the calculation on the ADC's SNR, and SNR is definitely dependent on the bandwidth defined.
Regards;