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Frequently Asked Question

What is the difference between the coarse phase adjust and the fine delay adjust?

On the AD951x clock ICs, each output has a divider which features a coarse phase (or delay) adjust which allows for the selection of a given clock edge within the divide period as a delay or phase offset for that output. This feature adds no jitter to the clock output, but only allows for discrete delays in steps the size of the input clock period.

However, certain outputs also have a feature called a fine delay adjust. This feature is only available on certain LVDS/CMOS outputs, and never on an LVPECL output.