Datasheet

AD9522-0
Rev. 0 | Page 10 of 84
CLOCK OUTPUT ABSOLUTE PHASE NOISE (INTERNAL VCO USED)
Table 7.
Parameter Min Typ Max Unit Test Conditions/Comments
LVDS ABSOLUTE PHASE NOISE
Internal VCO; VCO divider = 4; LVDS output and
for loop bandwidths < 1 kHz
VCO = 2950 MHz; Output = 737.5 MHz
@ 1 kHz Offset −59 dBc/Hz
@ 10 kHz Offset −90 dBc/Hz
@ 100 kHz Offset −115 dBc/Hz
@ 1 MHz Offset −133 dBc/Hz
@ 10 MHz Offset −146 dBc/Hz
@ 40 MHz Offset −149 dBc/Hz
VCO = 2750 MHz; Output = 685 MHz
@ 1 kHz Offset −60 dBc/Hz
@ 10 kHz Offset −92 dBc/Hz
@ 100 kHz Offset −118 dBc/Hz
@ 1 MHz Offset −135 dBc/Hz
@ 10 MHz Offset −148 dBc/Hz
@ 40 MHz Offset −151 dBc/Hz
VCO = 2550 MHz; Output = 632.5 MHz
@ 1 kHz Offset −64 dBc/Hz
@ 10 kHz Offset −95 dBc/Hz
@ 100 kHz Offset −120 dBc/Hz
@ 1 MHz Offset −137 dBc/Hz
@ 10 MHz Offset −148 dBc/Hz
@ 40 MHz Offset −151 dBc/Hz
CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING INTERNAL VCO)
Table 8.
Parameter Min Typ Max Unit Test Conditions/Comments
LVDS OUTPUT ABSOLUTE TIME JITTER
Application example based on a typical
setup where the reference source is
clean, so a wider PLL loop bandwidth is
used; reference = 15.36 MHz; R DIV = 1
VCO = 2949 MHz; LVDS = 245.76 MHz; PLL LBW = 55 kHz 187 fs rms Integration BW = 200 kHz to 10 MHz
352 fs rms Integration BW = 12 kHz to 20 MHz
VCO = 2580 MHz; LVDS = 122.88 MHz; PLL LBW = 55 kHz 166 fs rms Integration BW = 200 kHz to 10 MHz
321 fs rms Integration BW = 12 kHz to 20 MHz
VCO = 2580 MHz; LVDS = 61.44 MHz; PLL LBW = 55 kHz 218 fs rms Integration BW = 200 kHz to 10 MHz
378 fs rms Integration BW = 12 kHz to 20 MHz
CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK CLEANUP USING INTERNAL VCO)
Table 9.
Parameter Min Typ Max Unit Test Conditions/Comments
LVDS OUTPUT ABSOLUTE TIME JITTER
Application example based on a typical
setup where the reference source is jittery,
so a narrower PLL loop bandwidth is used;
reference = 19.44 MHz; R DIV = 162
VCO = 2799 MHz; LVDS = 155.52 MHz; PLL LBW = 1.8 kHz 617 fs rms Integration BW = 12 kHz to 20 MHz
VCO = 2580 MHz; LVDS = 122.88 MHz; PLL LBW = 1.8 kHz 514 fs rms Integration BW = 12 kHz to 20 MHz