Datasheet > SM843256KA

SM843256KA

更新时间： 2024-09-23 09:22:07

品牌	Logo	应用领域
麦瑞 - MICREL		以太网
页数	文件大小	规格书
8页	233K
描述
10 Gigabit Ethernet and SONET, 6 output, Ultra-Low Jitter LVPECL Frequency Synthesizer

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SM843256KA 数据手册

SM843256

10 Gigabit Ethernet and SONET, 6 output,

Ultra-Low Jitter LVPECL Frequency

Synthesizer

General Description

Features

The SM843256 provides a low-noise timing solution for

high speed, high accuracy synthesis of clock signals.

Common applications include SONET, Gigabit Ethernet,

10 Gigabit Ethernet, and similar networking standards. It

includes a unique power reduction methodology, along

with a patented RotaryWave^TMarchitecture that provides a

very stable clock with very low noise.

• Generates six LVPECL outputs

• 2.5V or 3.3V operating range

• Typical phase jitter @ 156.25MHz

(1.875MHz to 20MHz): 80fs (typical) @ 3.3V

• 75MHz to 625MHz output frequencies

• Industrial temperature range

• Green, RoHS, and PFOS compliant

• Available in 24-pin TSSOP EPAD

• Operating supply modes:

Power supplies of either 3.3V or 2.5V are supported, with

superior jitter and phase noise performance. The device

synthesizes different low noise LVPECL output

frequencies such as 125MHz, 156.25MHz, 312.5MHz, and

625MHz for Ethernet applications; 77.76MHz, 155.52MHz,

311.04MHz, and 622.08MHz for SONET applications. The

crystal reference frequencies used include 25MHz and

19.44Mhz for Ethernet and SONET applications,

respectively.

Core/Output

3.3V/3.3V, 3.3V/2.5V, 2.5V/2.5V

Applications

• SONET

The SM843256 is an excellent replacement for IDT Femto-

clocks, with improved accuracy, power consumption,

waveform integrity, and jitter.

• Gigabit Ethernet

• 10-Gigabit Ethernet

• Infiniband

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

________________________________________________________________________________________________________________________

Block Diagram

RotaryWave is a 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

M9999-072110-B

July 2010

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与SM843256KA相关器件

型号	品牌	获取价格	描述	数据表
SM844256	MICREL	获取价格	10 Gigabit Ethernet and SONET, 6 Output, Ultra-Low Jitter LVDS Frequency Synthesizer
SM844256	MICROCHIP	获取价格	The SM844256 provides a low-noise timing solution for high speed, high accuracy synthesis
SM844256KA	MICREL	获取价格	10 Gigabit Ethernet and SONET, 6 Output, Ultra-Low Jitter LVDS Frequency Synthesizer
SM844256KATR	MICREL	获取价格	DATACOM, PDSO24, GREEN AND PFOS FREE, TSSOP-24
SM844256KA-TR	MICROCHIP	获取价格	DATACOM, PDSO24
SM-845.3KOHMS1%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 0.125W, 45300ohm, 150V, 1% +/-Tol, -10,10ppm/Cel, 2714
SM-845.3OHMS0.005%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 0.125W, 45.3ohm, 150V, 0.005% +/-Tol, -20,20ppm/Cel, 2714
SM-845.3OHMS0.02%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 0.125W, 45.3ohm, 150V, 0.02% +/-Tol, -20,20ppm/Cel, 2714
SM-845.3OHMS0.1%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 0.125W, 45.3ohm, 150V, 0.1% +/-Tol, -20,20ppm/Cel, 2714
SM-845.3OHMS0.25%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 0.125W, 45.3ohm, 150V, 0.25% +/-Tol, -20,20ppm/Cel, 2714

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