QWe want to increase VREF to 3,3V. In this case, the gain of the AD8138 will bet
set to 1 wich may increase the SNR.
So do the AD9244 accepts a VREF to 3,3V (and a input range of 3,3V) ?
AThe AD9244 reference maximum is 2V. A voltage above this will not damage the
part, but we cannot guarantee the ac performance, which will probably degrade.
The maximum input swing is 2Vp-p. It can be centered at 0.5 to 4V as specified
in the datasheet dc specifications, but if you go above 2Vp-p the converter can
give invalid data. Also, with a 3.3V reference, and a 3.3V input the input
will clip resulting in invalid data.