SM802109UMG 데이터 시트보기 (PDF) - Micrel

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SM802109UMG

ClockWorks™ PCI-e Quad 100MHz Ultra-Low Jitter, HCSL Frequency Synthesizer

Micrel 

SM802109

ClockWorks™ PCI-e Quad 100MHz

Ultra-Low Jitter, HCSL

Frequency Synthesizer

General Description

The SM802109 is a member of the ClockWorks™ family of

devices from Micrel and provides an extremely low-noise

timing solution for PCI-Express clock signals. It is based

on 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 four HCSL output clocks at 100MHz. The

SM802109 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 four HCSL clock outputs at 100MHz

• 2.5V or 3.3V operating range

• Typical phase jitter @ 100MHz

(1.875MHz to 20MHz): 105fs

• Industrial temperature range (–40°C to +85°C)

• Green, RoHS, and PFOS compliant

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

Applications

• PCI-Express

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

September 2011

M9999-092911-B

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

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