Datasheet > SM802117

SM802117

更新时间： 2024-11-21 07:17:11

品牌	Logo	应用领域
麦瑞 - MICREL		以太网
页数	文件大小	规格书
10页	328K
描述
ClockWorks? GbE (125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer

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SM802117 数据手册

SM802117

ClockWorks™ GbE (125MHz)

Ultra-Low Jitter, LVPECL

Frequency Synthesizer

General Description

Features

The SM802117 is a member of the ClockWorks™ family of

devices from Micrel and provides an extremely low-noise

timing solution for GbE Ethernet clock signals. It is based

upon a unique patented RotaryWave^®architecture that

provides very low phase noise.

• Generates one or two LVPECL clock outputs at 125MHz

• 2.5V or 3.3V operating range

• Typical phase jitter @ 125MHz

(1.875MHz to 20MHz): 115fs

• Industrial temperature range (–40°C to +85°C)

• Green, RoHS, and PFOS compliant

• Available in 24-pin 4mm × 4mm QFN package

The device operates from a 3.3V or 2.5V power supply

and synthesizes LVPECL output clocks at 125MHz. There

are two differential clock outputs each with it’s own OE pin

allowing them to be disabled independently. The

SM802117 accepts a 25 MHz crystal or LVCMOS

reference clock.

Applications

• Gigabit Ethernet - PHY

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

___________________________________________________________________________________________________________

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

M9999-101311-B

hbwhelp@micrel.com or (408) 955-1690

October 2011

12 3 4 5 6 7...10

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与SM802117相关器件

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SM802117UMG	MICREL	获取价格	ClockWorks? GbE (125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802117UMGTR	MICREL	获取价格	ClockWorks? GbE (125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802120	MICREL	获取价格	ClockWorksTM 125MHz LVDS / 125 MHz HCSL Ultra-Low Jitter Frequency Synthesizer
SM802120UMG	MICROCHIP	获取价格	125MHz, OTHER CLOCK GENERATOR, QCC44
SM802120UMG-TR	MICROCHIP	获取价格	125MHz, OTHER CLOCK GENERATOR, QCC44
SM802121	MICREL	获取价格	ClockWorks10GbE (156.25MHz), Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802121UMG	MICREL	获取价格	ClockWorks10GbE (156.25MHz), Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802121UMGTR	MICREL	获取价格	ClockWorks10GbE (156.25MHz), Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802123	MICREL	获取价格	ClockWorks? 125MHz/25MHz Ultra-Low Jitter, LVCMOS Frequency Synthesizer
SM802123UMG	MICREL	获取价格	ClockWorks? 125MHz/25MHz Ultra-Low Jitter, LVCMOS Frequency Synthesizer