ICS8440258-46 Datasheet, PDF (5/16 Pages) Integrated Device Technology – FEMTOCLOCK™ CRYSTAL/LVCMOS-TOLVDS/LVCMOS FREQUENCY SYNTHESIZER

ICS8440258-46
FEMTOCLOCK™ CRYSTAL/LVCMOS-TO-LVDS/ LVCMOS FREQUENCY SYNTHESIZER
PRELIMINARY
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-200
10
TYPICAL PHASE NOISE AT 125MHZ (LVCMOS)
Ethernet Filter
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.37ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
100
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-200
10
TYPICAL PHASE NOISE AT 125MHZ (LVDS)
Ethernet Filter
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.34ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
100
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
IDT^™ / ICS^™ LVDS/LVCMOS FREQUENCY SYNTHESIZER
5
ICS8440258AK-46 REV B JANUARY 15, 2008