2016-05-26 07:00 AM
Hi, eveybody.
I read that the input impedance on a SDADC input should be from 47k to 640k (more or less) and depends on gain and clock frequency. Let's suppose that a 100k ohm impedance is needed. Can the input impedance of a SDADC input be like the one in the image? MIS_Iout is the signal for the SDADC input. I_OUT is a 0-5V signal that I need to reduce to the 0-3.3V range (because the Vref for the SDADC is 3.3V). Regards Igor