T2080 Ref Clock Requirement

[tomr2020]

We are adding 10G XFI to a T2080 board. The reference clock requirements seems to tough to meet. The Total jitter is spec'd at 11ps. Is there a chance that this is 11ps RMS instead of total Jitter?  Anyone have an oscillator that will do this if its not RMS? Table 61 of the data sheet. Thanks Tom

[alexander_yakov]

The total jitter = total deterministic jitter + 14.069 * square root of sum of random jitter squared assuming BER 10E-12. thus answer to your question is yes take the RMS of random jitter at integration range then multiply it by 14.069 then add any deterministic jitter to the sum which should be under 11ps per our spec. In our RM we used a part similar to:

https://www.idt.com/document/dst/8t49n222i-datasheet

Have a great day,
Alexander
TIC

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