ICS843020-01 Datasheet, PDF (9/20 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM 680MHZ, CRYSTAL-TO- 3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS843020-01
FEMTOCLOCKS™ 680MHZ, CRYSTAL-TO-
3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
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 156.25MHZ
Filter
156.25MHz
RMS Phase Jitter (Random)
1.875MHz to 20MHz = 0.49ps (typical)
Raw Phase Noise Data
Phase Noise Result by adding
a Filter to raw data
1k
10k
100k
1M
10M
100M
OFFSET FREQUENCY (HZ)
843020AY-01
www.icst.com/products/hiperclocks.html
9
REV. B APRIL 14, 2005