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Phase Noise to Jitter Converter
Convert a flat phase-noise segment into integrated phase noise, RMS phase noise, RMS jitter, and RMS phase error for clock, RF, and PLL analysis.
Input Parameters
Results
For full phase-noise curves, split the curve into offset-frequency segments and sum the linear noise power.
Equations Used
Linear Phase Noise:
Llinear = 10^(LdBc/10)
Integrated Phase Noise:
φrms = sqrt(2 × Llinear × bandwidth)
RMS Jitter:
Jitter = φrms / (2π × carrier frequency)
RMS Phase in Degrees:
Phase degrees = φrms × 180 / π
Frequently Asked Questions (FAQ)
Q1: What does this phase noise to jitter converter do?
It converts integrated phase noise over an offset range into RMS jitter for clocks, RF carriers, and PLL outputs.
Q2: Why is there a factor of 2?
Single-sideband phase noise is commonly doubled when converting to total phase variance.
Q3: Can I enter a full phase-noise curve?
This version assumes one flat phase-noise segment. For full curves, integrate multiple segments or use measured phase-noise data.
Q4: Why does carrier frequency affect jitter?
The same RMS phase error corresponds to less time jitter at higher carrier frequency.
Q5: Is dBc/Hz the same as integrated dBc?
No. dBc/Hz is a density. Integrated dBc depends on bandwidth.
Q6: Is this suitable for PLL clock analysis?
Yes for first-pass estimates, but production clock jitter should be calculated from the full phase-noise profile.
