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SM802121 - ClockWorks™ 10GbE (156.25MHz),

Ultra-Low Jitter, LVPECL Frequency Jitter

SM802121 Block Diagram

The SM802121 is a member of the ClockWorks™ family of devices from

Micrel and provides an extremely low noise timing solution for 10GbE

architecture that provides very low phase noise.

The device operates from a 2.5V or 3.3V power supply and synthesizes

a single LVPECL output clock at 156.25MHz. The SM802121 accepts a

25MHz crystal or LVCMOS reference clock.

(1.875MHz to 20MHz): 110fs

C to +85 C)

4mm QFN package

Applications

Features

SM802123 - ClockWorks™ 125MHz/25MHz

Ultra-Low Jitter, LVCMOS Frequency

Synthesizer

SM802123 Block Diagram

The SM802123 is a member of the ClockWorks™ family of devices from

Micrel and provides an extremely low noise timing solution. It is based upon

noise.

The device operates from a 2.5V or 3.3V power supply and synthesizes

16 LVCMOS output clocks, eight at 125MHz and eight at 25MHz. The

SM802123 accepts a 25MHz LVCMOS reference input.

eight LVCMOS output clocks at 25MHz

(1.875MHz to 20MHz): 115fs

C to +85 C)

7mm QFN package

Applications

Features

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