MICRONIX

How to calculate clock jitter from phase noise

The way of calculating jitter of a clock signal from the phase noise measured with the signal analyzer is mentioned.

[Application]

Connection block diagram

Figure:接続ブロック

[Solution]

The clock jitter is computable from the phase noise level measured with the signal analyzer.

The instantaneous jitter can also measured by real time acquisition.
Moreover, it is also possible to obtain the RMS jitter for a long period of time by averaging.

In case of Fc=1GHz, the values of Cj and Tj based on typical phase noise and bandwidth are shown in table below.

[System configuration]

Signal analyzerMSA538 x 1
Lithium-ion battery [MB400] x 1
SMA-SMA cables1.5m [MC303] x 1
Adapter N(P)/SMA(J) [MA306] x 1

*MICRONIX Corporation reserves the right to make changes in design, specification and other information without prior notice.

[Products introduction]

2014/1

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