SM802105 データシートの表示（PDF） - Micrel

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SM802105

ClockWorks™ 10GbE (156.25MHz, 312.5MHz), Ultra-Low Jitter, LVPECL Frequency Synthesizer

Micrel 

SM802105

ClockWorks™ 10GbE

(156.25MHz, 312.5MHz), Ultra-Low Jitter,

LVPECL Frequency Synthesizer

General Description

The SM802105 is a member of the ClockWorks™ family of

devices from Micrel and provides an extremely low-noise

timing solution for 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 LVPECL output clocks at 156.25MHz or

312.5MHz. There are normally two clock outputs but one

output can be achieved by powering down the second

output with the OE pin. The SM802105 accepts a 25MHz

crystal or LVCMOS reference clock.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• Generates one or two LVPECL clock outputs at

156.25MHz or 312.5MHz

• 2.5V or 3.3V operating range

• Typical phase jitter @ 156.25MHz

(1.875MHz to 20MHz): 110fs

• Industrial temperature range

• Green, RoHS, and PFOS compliant

• Available in 24-pin 4mm × 4mm QFN package

Applications

• 10Gigabit Ethernet

Block Diagram

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

April 2011

M9999-042111-A

hbwhelp@micrel.com or (408) 955-1690

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