Part Number: AFE5809 Hi there, We are designing LVDS or LVPECL AC coupling interfaces for AFE5809 ADC clocks and CWx16 clocks. 50MHZ for ADC. Question: 1. What's the differential input resistance of clock pin pairs of AFE5809 ? Seems no detail data in datasheet. 2. I assume it is High impedance for Question 1. Both LVDS and LVPECL require a 100ohm differential termination between CLK_P and CLK_N. However, we are not sure the relative loaction of AC coupling capacitors and 100ohm resistor. From Datashet Figure107, resitor are placed before AC caps, that is "Clock source--> 100ohm --> AC caps ---> AFE". But I also see some deisgn as "Clock source--> AC caps--->100ohm --> AFE" . Which one is correct? And Why? 3. Should we place 100ohm+AC caps close to Clock source IC or AFE? And Why? Thanks, and Happy New Year! 100hm -->
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