AN256

2

Rev. 0.2

3.1. Example without Spurs

Figure 1 shows a traditional phase noise plot for a 1066 MHz carrier for which we can calculate the integrated jitter.

Figure 2 shows the actual timing jitter versus frequency by employing the result of the appendix. This figure also

provides a better visual representation of the dominant noise source across the frequency band. Figure 3 expands

the first 10 MHz of the plot; the first pass of the rectangular approximation is also shown.

Figure 1. Traditional Log-Log Phase Noise Plot

Figure 2. Linear-Linear Phase Noise Plot

Traditional Log-Log Phase Noise Plot for a 1066MHz Carrier

-160

-140

-120

-100

-80

-60

-40

10.0E+0

100.0E+0

1.0E+3

10.0E+3

100.0E+3

1.0E+6

10.0E+6

100.0E+6

Offset Frequency (Hz)

Linear-Linear Phase Noise Plot for a 1066MHz Carrier

1E-17

1E-16

1E-15

10.0E+0

10.0E+6

20.0E+6

30.0E+6

40.0E+6

50.0E+6

60.0E+6

70.0E+6

80.0E+6

90.0E+6

100.0E+6

Offset Frequency (Hz)