Dear Sir,
I have been facing same problem as Mr. Kiran in this post: http://e2e.ti.com/support/data_converters/precision_data_converters/f/73/t/236138.aspx
I gave a sinusoidal signal of 3V between AINP and AGND. RefM and RefP were 2V and 4V respectively. AVdd was 8V. But the output D0 to D11 was 0. i.e there was no shift when I observed it on the CRO.
Are there any other connections to be made on the kit? I would be glad if you post a simple circuit for a normal analog input.