Hi Eugenio,
I want to ask something more about the frequency responses of the two chips. It is good to know that they work really well at DC, would their frequency response be rather flat near the DC as well? We are expecting to operate at 2 MSPS for both so it would be nice if the frequency response maintains as flat for this range. Also, about the driver circuit provided in the Figure 11 in the datasheet for ADS1605, would the frequency response remain as flat (shown in Figure 19) if we are using this configuration?