[SI-LIST] termination with ac coupling

When ac coupling into a receiving device at the end of a (differential) 
transmission line, I have generally put the termination resistors first, then 
through the capacitors into the IC. Nowadays many receiving devices have 
built-in resistors, so the terminations are after the coupling capacitors. I 
realise that larger capacitor values are then required to handle the lower 
frequencies. Apart from this, are there any other issues to consider? For 
example, as regards reflections, does the position of the termination (before 
or after the coupling capacitors) make any difference?
In particular, I want to connect from a 100 ohm (differential) transmission 
line into a device having inputs each of which is characterized as 75 ohm. If I 
connect 150 ohm in parallel with each input, this should correctly terminate 
the line. But should I place these 150 ohm resistors before or after the 
coupling capacitors? Any opinions or insights are welcome.

Thanks,
Stephen Greenhalgh

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