AD2S1200: Is there any problem with setting a lower value to R11 and R17? Is
there a minimum value from the point of view of the AD2S1200?
The 10K resistors R11 and R17 have no impact on the AD2S1200 operation. You can
set them lower if you wish. Just to be aware that these resistors will
attenuate the input signals. The resistors should be tight tolerance, minimum
1% as the potential tolerance variation between the sine and cosine channels
can lead to amplitude mismatch and therefore increased error.