ICS844251I-15 Datasheet, PDF (5/11 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO-LVDS CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844251I-15
FEMTOCLOCKS™ CRYSTAL-TO-LVDS
CLOCK GENERATOR
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
TYPICAL PHASE NOISE AT 125MHZ @ 3.3V
Ethernet Filter
125MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.46ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
844251BGI-15
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
TYPICAL PHASE NOISE AT 625MHZ @ 3.3V
Ethernet Filter
625MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.35ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
Ethernet Filter to raw data
1k
10k
100k
1M
OFFSET FREQUENCY (HZ)
www.icst.com/products/hiperclocks.html
5
10M
100M
REV. A NOVEMBER 23, 2005