
ICS844002I-01
FEMTOCLOCKS CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER
IDT / ICS LVDS FREQUENCY SYNTHESIZER
5
ICS844002AGI-01 REV. D OCTOBER 20, 2008
Typical Phase Noise at 156.25MHz
Ehternet Filter
Phase Noise Result by adding a
Ethernet filter to raw data
Raw Phase Noise Data
156.25MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.41ps (typical)
Noise
P
o
we
r
d
Bc
Hz
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
1k
10k
100k
1M
10M
100M
Offset Frequency (Hz)