Integrated
Circuit
Systems, Inc.
ICS84325
CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
TYPICAL PHASE NOISE
84325EM
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
Fibre Channel 1
Bandpass Filter
➚ Raw phase noise data
Jitter BW Jitter Filter Diff. Jitter
Source
Mode
Process Result
Noise only
Freq. carrier
106.250M Hz
Start Freq.
Stop Freq.
10.000
40.000M Hz
Jitter
2.62 ps
Phase noise result by adding
Bandpass Filter to raw data
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
Fibre Channel 2
Bandpass Filter
➚ Raw phase noise data
Jitter BW Jitter Filter Diff. Jitter
Source
Mode
Process Result
Noise only
Freq. carrier
Start Freq.
212.500M Hz
Stop Freq.
10.000
40.000M Hz
Jitter
2.76 ps
Phase noise result by adding
Bandpass Filter to raw data
1k
10k
100k
1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
5
10M
100M
REV. B OCTOBER 11, 2004