SM802108 Datasheet PDF - MICREL

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SM802108
MICREL

Part Number SM802108
Description ClockWorks 10GbE & GbE (156.25MHz 125MHz) Ultra-Low Jitter - LVPECL Frequency Synthesizer
Page 11 Pages


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SM802108
ClockWorks10GbE & GbE (156.25MHz,
125MHz) Ultra-Low Jitter, LVPECL
Frequency Synthesizer
General Description
The SM802108 is a member of the ClockWorksfamily of
devices from Micrel and provides an extremely low-noise
timing solution for GbE and 10GbE Ethernet clock signals.
It is based upon a unique patented RotaryWave®
architecture that provides very low phase noise.
The device operates from a 3.3V or 2.5V power supply
and synthesizes two LVPECL output clocks at 156.25MHz
and another two at 125MHz. The SM802108 accepts a 25
MHz crystal or LVCMOS reference clock.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Generates two LVPECL clock outputs at 156.25MHz
and two LVPECL clock outputs at 125MHz
2.5V or 3.3V operating range
Typical phase jitter @ 156.25MHz
(1.875MHz to 20MHz): 110fs (typical) at 3.3V
Industrial temperature range
Green, RoHS, and PFOS compliant
Available in 24-pin 4mm × 4mm QFN package
Applications
10Gigabit Ethernet
Gigabit Ethernet
___________________________________________________________________________________________________________
Block Diagram
www.DataSheet4U.com
ClockWorks is a trademark of Micrel, Inc
RotaryWave is a registered trademark of Multigig, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
January 2011
M9999-012111-A
hbwhelp@micrel.com or (408) 955-1690

SM802108 datasheet pdf
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SM802108 pdf
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