GENERAL DESCRIPTION
The 840051I is a Gigabit Ethernet Clock Generator and a
member of the HiPerClocksTM family of high performance
devices from ICS. The 840051I can synthesize 10 Gigabit
Ethernet, SONET, or Serial ATA reference clock fre-quencies
with the appropriate choice of crystal and output divider. The
840051I has excellent phase jitter performance and is packaged
in a small 8-pin TSSOP, making it ideal for use in systems with
limited board space.
FEATURES
• 1 LVCMOS/LVTTL output, 15Ω output impedance
• Crystal oscillator interface designed for
18pF parallel resonant crystals
• Output frequency range: 70MHz - 170MHz
• VCO range: 560MHz - 680MHz
• RMS phase jitter at 155.52MHz (1.875MHz - 20MHz):
0.48ps (typical)
• RMS phase noise at 155.52MHz
Offset Noise Power
100Hz ................-99.7 dBc/Hz
1KHz .................-120 dBc/Hz
10KHz .................-128 dBc/Hz
100KHz .................-127 dBc/Hz
• 3.3V or 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Lead-Free fully RoHS compliant
• Not Recommended For New Designs
• For drop in replacement part use 840N051i