SM802104 View Datasheet(PDF) - Micrel
Part Name
Description
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SM802104 Datasheet PDF : 11 Pages
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SM802104
ClockWorks™ Fibre Channel
(106.25MHz, 212.5MHz), Ultra-Low Jitter,
LVPECL Frequency Synthesizer
General Description
The SM802104 is a member of the ClockWorks™ family of
devices from Micrel and provides an extremely low-noise
timing solution for Fibre Channel 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 106.25MHz or
212.5MHz. There are normally two clock outputs, but one
output can be achieved by powering down the second
output with the OE pin. The SM802104 accepts a
26.5625MHz 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
106.25MHz or 212.5MHz
• 2.5V or 3.3V operating range
• Typical phase jitter @ 106.25MHz
(637kHz to 10MHz): 200fs
• Industrial temperature range
• Green, RoHS, and PFOS compliant
• Available in 24-pin 4mm × 4mm QFN package
Applications
• Fibre Channel
• Storage Networking (SAN, NAS)
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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