AD9518-3 datasheet(19/64 Pages) AD

19 / 64 page

Data Sheet

AD9518-3

Rev. B | Page 19 of 64

–100

–110

–120

–160

–150

–140

–130

100M

10M

100k

10k

FREQUENCY (Hz)

Figure 23. Phase Noise (Absolute) Clock Generation; Internal VCO at

1.97 GHz; PFD = 15.36 MHz; LBW = 143 kHz; LVPECL Output = 122.88 MHz

–90

–100

–110

–120

–130

–140

–150

–160

100M

10M

100k

10k

FREQUENCY (Hz)

Figure 24. Phase Noise (Absolute) Clock Cleanup; Internal VCO at 1.87 GHz;

PFD = 19.44 MHz; LBW = 12.8 kHz; LVPECL Output = 155.52 MHz

–120

–160

–150

–140

–130

100M

10M

100k

10k

FREQUENCY (Hz)

Figure 25. Phase Noise (Absolute); External VCXO (Toyocom TCO-2112) at

245.76 MHz; PFD = 15.36 MHz; LBW = 250 Hz; LVPECL Output = 245.76 MHz

1000

100

0.1

0.01

0.1

100

1000

JITTER FREQUENCY (kHz)

OC-48 OBJECTIVE MASK

AD9518

NOTE: 375UI MAX AT 10Hz OFFSET IS THE

MAXIMUM JITTER THAT CAN BE

GENERATED BY THE TEST EQUIPMENT.

FAILURE POINT IS GREATER THAN 375UI.

fOBJ

Figure 26. GR-253 Jitter Tolerance Plot

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