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Altera_Forum
Honored Contributor I
839 Views

Calculating jitter

I see a PLL output jitter spec of 25mUI for clocks less than 100MHz. Does anyone know how to calculate the output jitter with this spec?

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Altera_Forum
Honored Contributor I
49 Views

25x10ˆ-3 (10ns) = 250ps 

 

Where 10ns is the period of the clock you are using.
Altera_Forum
Honored Contributor I
49 Views

UI is unit interval, which is the period of your clock in this case. mUI is 0.001UI. Based on that you can calculate your jitter for whatever period clock you have.

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