Q. Does the phase offset of the refclk vary widely between power cycles and temperature changes? Does Maxim characterize for the phase offset from IC to IC?
A. The delay from XTAL to CLKOUT is not characterized. We expect it would be on the order of a couple of ns. It will vary somewhat with temperature. If both MAX2769s are co-located and presumably subject to the same temperature, this delay variation will tend to track. There may be slight part-to-part variation. The customer can observe the CLKOUT signals on an oscilloscope and confirm the above statements.