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Micrel
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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.
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
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