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Old 6th May 2012, 07:15 PM   #1
percy is offline percy  United States
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Default Which of these is the correct jitter formula ?

Found three different versions for time<->db jitter formula -
- 20log(1/2piFJ) Jitter in a Nutshell: "Whole Lotta Shakin' Goin' On"?
- 20log(Jw/4) where w is the angular freq meaning 2piF cMP² | CMP / 03Jitter
- And same as above except w is just freq in Hz. Jitter explained - Part 1.4 [English]

Each would obviously yield a different result so which one is correct ?
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Old 7th May 2012, 10:20 PM   #2
percy is offline percy  United States
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seriously ? no one knows ? or am I missing something ?
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Old 8th May 2012, 09:34 AM   #3
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A bit more jitter articles:

There are several jitter types, maybe that's the reason for formula mismatch?
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Old 8th May 2012, 10:33 AM   #4
oshifis is offline oshifis  Hungary
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The frequency plot (spectrum) tells more about jitter than a single RMS value.
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Old 8th May 2012, 06:31 PM   #5
percy is offline percy  United States
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I am just asking about the unit conversion. From -db to pico/nano seconds and vice versa.

as for types of jitter - I think they all are talking about sinusoidal jitter.
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