PRELIMINARY
Integrated Circuit Systems, Inc.
ICS840022
FEMTOCLOCKS™CRYSTAL-TOLV
CMOS/LVTTL CLOCK GENERATOR
FEATURES
• 1 LV
CMOS/LVTTL output, 7Ω output impedence • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal • Output frequencies: 125MHz or 62.
5MHz (selectable) • RMS phase jitter @ 125MHz, using a 25MHz crystal (1.
875MHz - 20MHz): 0.
55ps (typical) • RMS phase noise at 125MHz: Offset Noise Power 100Hz .
.
.
.
-106.
3 dBc/Hz 1KHz .
.
.
.
-126.
3 dBc/Hz 10KHz .
.
.
.
-131.
7 dBc/Hz 100KHz .
.
.
.
-130.
8 dBc/Hz • 3.
3V operating supply • 0°C to 70°C ambient operating temperature • Industrial temperature information available upon request...