SM802112 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – ClockWorks™ 3-Output, 480MHz/80MHz, Ultra-Low Jitter LVDS/CMOS Frequency Synthesizer

SM802112
ClockWorks™ 3-Output, 480MHz/80MHz,
Ultra-Low Jitter LVDS/CMOS
Frequency Synthesizer
General Description
The SM802112 is a member of the ClockWorks™ family of
devices from Micrel and provides extremely low-noise
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 two LVDS output clocks, one at 480MHz
and one at 80MHz and one LVCMOS clock at 80MHz.
The SM802112 accepts an 80MHz LVCMOS reference
clock or an 80MHz 1Vp-p sine wave.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
• Generates two LVDS clock outputs, one at 480MHz and
one at 80MHz
• Generates one LVCMOS clock output at 80MHz
• 2.5V or 3.3V operating range
• Typical phase jitter @ 480MHz
(12kHz to 20MHz): 290fs
• Industrial temperature range (–40°C to +85°C)
• Green, RoHS, and PFOS compliant
• Available in 44-pin 7mm × 7mm QFN package
Applications
• Set Top Box
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 [phone] • fax + 1 [phone] • http://www.micrel.com
September 2011
M9999-091411-A
[e-mail] or [phone]