
IDT / ICS HCSL CLOCK GENERATOR
5
ICS841602AGI REV. A JULY 10, 2008
ICS841602I
FEMTOCLOCKS CRYSTAL-TO-HCSL CLOCK GENERATOR
TYPICAL PHASE NOISE AT 100MHZ
100MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.40ps (typical)
OFFSET FREQUENCY (HZ)
N
OISE
P
O
WER
dBc
Hz
PCIe Filter
Raw Phase Noise Data
Phase Noise Result by adding
a PCIe Filter to raw data
OFFSET FREQUENCY (HZ)
TYPICAL PHASE NOISE AT 125MHZ
N
OISE
P
O
WER
dBc
Hz
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.42ps (typical)
PCIe Filter
Raw Phase Noise Data
Phase Noise Result by adding
a PCIe Filter to raw data