參數(shù)資料
型號: SM802105UMG
廠商: Micrel Inc
文件頁數(shù): 1/11頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER 2CH 24-QFN
產(chǎn)品培訓模塊: High Bandwidth Product Overview
標準包裝: 100
系列: ClockWorks™, RotaryWave™
類型: 時鐘/頻率合成器,多路復用器
PLL:
主要目的: 以太網(wǎng)
輸入: LVCMOS,晶體
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 無/是
頻率 - 最大: 312.5MHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤
供應商設(shè)備封裝: 24-QFN(4x4)
包裝: 管件
其它名稱: 576-3930
SM802105
ClockWorks
10GbE
(156.25MHz, 312.5MHz), Ultra-Low Jitter,
LVPECL Frequency Synthesizer
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
General Description
The SM802105 is a member of the ClockWorks
family of
devices from Micrel and provides an extremely low-noise
timing solution for 10GbE Ethernet 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 156.25MHz or
312.5MHz. There are normally two clock outputs but one
output can be achieved by powering down the second
output with the OE pin. The SM802105 accepts a 25MHz
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
156.25MHz or 312.5MHz
2.5V or 3.3V operating range
Typical phase jitter @ 156.25MHz
(1.875MHz to 20MHz): 110fs
Industrial temperature range
Green, RoHS, and PFOS compliant
Available in 24-pin 4mm × 4mm QFN package
Applications
10Gigabit Ethernet
Block Diagram
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