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SM802124 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SM802124 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 9 page SM802124 ClockWorks ™ DUAL 125MHz Ultra-Low Jitter, CMOS Frequency Synthesizer 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 September 2011 M9999-101311-B hbwhelp@micrel.com or (408) 955-1690 General Description The SM802124 is a member of the ClockWorks ™ family of devices from Micrel and provides an extremely low-noise timing solution for 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 CMOS output clocks at 125MHz from a 15MHz LVCMOS reference clock. Data sheets and support documentation can be found on Micrel’s web site at: HU www.micrel.com UH . Features • Generates two LVCMOS clock outputs at 125MHz • 2.5V or 3.3V operating range • Typical rms phase jitter @ 125MHz 1.875MHz to 20MHz : 85fs (Input source dependent) • Industrial temperature range (–40°C to +85°C) • Green, RoHS, and PFOS compliant • Available in 24-pin 4mm × 4mm QFN package Applications • Gigabit Ethernet Block Diagram |
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