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SM802108

MICREL
Part Number SM802108
Manufacturer MICREL
Description ClockWorks 10GbE & GbE (156.25MHz 125MHz) Ultra-Low Jitter - LVPECL Frequency Synthesizer
Published Mar 10, 2011
Detailed Description SM802108 ClockWorks™ 10GbE & GbE (156.25MHz, 125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer General Description...
Datasheet PDF File SM802108 PDF File

SM802108
SM802108

Overview
SM802108 ClockWorks™ 10GbE & GbE (156.
25MHz, 125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer General Description The SM802108 is a member of the ClockWorks™ family 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 Appl...


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