I am using the ADS8472EVM and am running into several issues. First, it looks like the ADC is outputting its parallel data in binary twos complement coding according to Table 1 (pg. 24) of ADS8472 datasheet. If this is true, the HEX CODE(s) to the right of the BINARY CODE seems incorrect. Please confirm. Second, my setup consists of 1MHz conversion starts in Auto Read mode and am polling its data at 2MHz. When grounding the inputs, it seems I get a few readings where the most significant nibble is "random". Obviously, noise can be a factor but I would expect values close to bipolar zero.