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SM802141UMG Arkusz danych(PDF) 1 Page - Micrel Semiconductor

Numer części SM802141UMG
Szczegółowy opis  Ultra-Low Jitter, LVPECL Frequency
Download  13 Pages
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Producent  MICREL [Micrel Semiconductor]
Strona internetowa  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

SM802141UMG Arkusz danych(HTML) 1 Page - Micrel Semiconductor

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SM802141
ClockWorks
 Selectable 62.5MHz,
125MHz, 156.25MHz and 312.5MHz
Ultra-Low Jitter, LVPECL Frequency
Synthesizer
ClockWorks is a trademark of Micrel, 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 2012
M9999-041812-A
hbwhelp@micrel.com or (408) 955-1690
General Description
The SM802141 is a part of Micrel’s ClockWorks
 family of
devices and provides an extremely low-noise timing
solution for Ethernet clock signals.
The device operates from a 3.3V or 2.5V power supply
and synthesizes differential LVPECL output clocks at
62.5MHz, 125MHz, 156.25MHz or 312.5MHz, selectable
through logic control pins. The SM802141 accepts a
25MHz crystal or LVCMOS reference clock.
Data sheet and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
 Configurable to generate up to four different LVPECL
clock frequencies
 2.5V or 3.3V operating range
 Typical phase jitter @ 125MHz
(12kHz to 20MHz): 255 fsrms
 Industrial temperature range (–40C to +85C)
 Green, RoHS, and PFOS compliant
 Available in 24-pin 4mm  4mm QFN package
Applications
 Ethernet PHY
 Storage networking (SAN, NAS)
Block Diagram


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