
IDT / ICS LVDS CLOCK GENERATOR
5
ICS844021BGI-01 REV. A NOVEMBER 6, 2012
ICS844021I-01
FEMTOCLOCKS CRYSTAL-TO-LVDS CLOCK GENERATOR
Phase Noise Result by adding
Ethernet Filter to raw data
Raw Phase Noise Data
Ethernet Filter
TYPICAL PHASE NOISE AT 125MHZ @ 3.3V
OFFSET FREQUENCY (HZ)
N
OISE
P
O
WER
dBc
Hz
TYPICAL PHASE NOISE AT 125MHZ @ 2.5V
OFFSET FREQUENCY (HZ)
N
OISE
P
O
WER
dBc
Hz
Phase Noise Result by adding
Ethernet Filter to raw data
Raw Phase Noise Data
Ethernet Filter
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.32ps (typical)
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.32ps (typical)