Given the absence of an input termination on the DS25BR101, I was wondering how best to bias the inputs to accept a single ended 75Ohm input signal (signal format is 3G/HD SDI Video). Thus far, I have had fair success by AC coupling a simple coax signal source terminated via 75Ohm resistor to ground (termination resistor is placed prior to AC coupling caps). I originally configured a DS25BR101 for a 75Ohm single ended input, however, the DS25BR101 has yielded much lower jitter output while also occupying far less board real estate (board real estate is extremely limited). So I am very keen to sticking with the DS25DR101 if at all possible.
Any suggestions or comments are much appreciated.
Thank you.
- Jay