SM843001-106 Datasheet, PDF (1/7 Pages) Micrel Semiconductor – ClockWorks™ Fibre Channel, 106.25MHz, Ultra-Low Jitter LVPECL Clock Frequency Synthesizer

SM843001-106
ClockWorks™ Fibre Channel, 106.25MHz,
Ultra-Low Jitter LVPECL Clock Frequency
Synthesizer
General Description
Features
The SM843001-106 is a Fibre Channel, 106.25MHz
LVPECL clock frequency synthesizer and a member of the
ClockWorks™ family of devices from Micrel. It provides a
low-noise timing solution for high-speed, high-accuracy
synthesis of clock signals. It includes a patented
RotaryWave^® architecture that provides a stable clock with
very low phase noise.
Power supplies of either 2.5V or 3.3V are supported, with
superior jitter and phase noise performance. The device
synthesizes a 106.25MHz, low-noise, LVPECL output for
Fibre Channel applications. The crystal reference
frequency used is 26.5625MHz.
The SM843001-106 is an excellent replacement for IDT
FemtoClocks^®, with improved waveform integrity, and jitter.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
• Generates a low jitter LVPECL output
• 2.5V or 3.3V operating voltage
• Typical phase jitter ~170 fs (637kHz to 10MHz)
@106.25MHz
• Crystal frequency: 26.5625MHz
• 106.25MHz output frequency
• RMS Phase Noise @ 106.25MHz:
– 1kHz:
−127dBc/Hz
– 10kHz: −134dBc/Hz
– 100kHz: −142dBc/Hz
– 1MHz: −144dBc/Hz
– 10MHz: −165dBc/Hz
– 20MHz: −168dBc/Hz
• Industrial temperature range
• Green-, RoHS-, and PFOS-compliant
• Available in 8-pin TSSOP
Applications
• Fibre Channel
• Storage Networking (SAN)
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Block Diagram
ClockWorks is a trademark of Micrel, Inc.
RotaryWave is a registered trademark of Multigig, Inc.
FemtoClocks is a registered trademark of IDT, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
October 2010
M9999-100610-A
[e-mail] or [phone]