SM802109

ClockWorks

™ PCI-e Quad 100MHz

Ultra-Low Jitter, HCSL

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 (

September 2011

M9999-092911-B

ber of the ClockWorks

3.3V or 2.5V pow

and synthesizes four HCSL output cloc

SM802109 accepts a 25MHz crystal or

reference clock.

support documentation can be found on

General Description

The SM802109 is a mem

™ family of

devices from Micrel and provides an extreme

timing solution for PCI-Express clock signals.

on a unique patented RotaryWave

®

archite

ly low-noise

It is based

cture that

provides very-low phase noise.

The device operates from a

er supply

ks at 100MHz. The

LVCMOS

Data sheets and

Features

.

ock outputs at 100MHz

ge

00MHz

(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

• Generates four HCSL cl

perating ran

• 2.5V or 3.3V o

• Typical phase jitter @ 1

•