Datasheet

Data Sheet AD9518-0
Rev. C | Page 7 of 64
CLOCK OUTPUT ADDITIVE PHASE NOISE (DISTRIBUTION ONLY; VCO DIVIDER NOT USED)
Table 6.
Parameter Min Typ Max Unit Test Conditions/Comments
CLK-TO-LVPECL ADDITIVE PHASE NOISE
Distribution section only; does not include
PLL and VCO
CLK = 1 GHz, Output = 1 GHz Input slew rate > 1 V/ns
Divider = 1
At 10 Hz Offset −109 dBc/Hz
At 100 Hz Offset −118 dBc/Hz
At 1 kHz Offset −130 dBc/Hz
At 10 kHz Offset −139 dBc/Hz
At 100 kHz Offset −144 dBc/Hz
At 1 MHz Offset −146 dBc/Hz
At 10 MHz Offset −147 dBc/Hz
At 100 MHz Offset
−149
dBc/Hz
CLK = 1 GHz, Output = 200 MHz Input slew rate > 1 V/ns
Divider = 5
At 10 Hz Offset −120 dBc/Hz
At 100 Hz Offset −126 dBc/Hz
At 1 kHz Offset −139 dBc/Hz
At 10 kHz Offset −150 dBc/Hz
At 100 kHz Offset −155 dBc/Hz
At 1 MHz Offset −157 dBc/Hz
>10 MHz Offset −157 dBc/Hz
CLOCK OUTPUT ABSOLUTE PHASE NOISE (INTERNAL VCO USED)
Table 7.
Parameter Min Typ Max Unit Test Conditions/Comments
LVPECL ABSOLUTE PHASE NOISE Internal VCO; direct to LVPECL output
VCO = 2.95 GHz; Output = 2.95 GHz
At 1 kHz Offset −47 dBc/Hz
At 10 kHz Offset −78 dBc/Hz
At 100 kHz Offset
−104
dBc/Hz
At 1 MHz Offset −122 dBc/Hz
At 10 MHz Offset −140 dBc/Hz
At 40 MHz Offset −146 dBc/Hz
VCO = 2.75 GHz; Output = 2.75 GHz
At 1 kHz Offset
−49
dBc/Hz
At 10 kHz Offset −79 dBc/Hz
At 100 kHz Offset −105 dBc/Hz
At 1 MHz Offset −123 dBc/Hz
At 10 MHz Offset −141 dBc/Hz
At 40 MHz Offset −146 dBc/Hz
VCO = 2.55 GHz; Output = 2.55 GHz
At 1 kHz Offset −51 dBc/Hz
At 10 kHz Offset −80 dBc/Hz
At 100 kHz Offset −106 dBc/Hz
At 1 MHz Offset −125 dBc/Hz
At 10 MHz Offset −142 dBc/Hz
At 40 MHz Offset −146 dBc/Hz