Datasheet > SM843251-156KA

SM843251-156KA

更新时间： 2024-09-23 09:22:07

品牌	Logo	应用领域
麦瑞 - MICREL		以太网时钟
页数	文件大小	规格书
7页	320K
描述
ClockWorks? 10-Gigabit Ethernet, 156.25MHz, Ultra-Low Jitter LVPECL Clock Frequency Synthesizer

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SM843251-156KA 数据手册

SM843251-156

ClockWorks™ 10-Gigabit Ethernet,

156.25MHz, Ultra-Low Jitter LVPECL Clock

Frequency Synthesizer

General Description

Features

The SM843251-156 is a 10-Gigabit Ethernet, 156.25MHz

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 very stable clock

with very low noise.

• Generates a low-noise 156.25MHz LVPECL output

• 2.5V or 3.3V operating voltage

• Typical phase jitter @156.25MHz~110fs

(1.875MHz − 20MHz)

• Crystal frequency: 25MHz

• 156.25MHz output frequency

• Phase Noise @ 156.25MHz:

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

superior jitter and phase noise performance. The device

synthesizes a 156.25MHz, low-noise, LVPECL output for

Ethernet applications. The crystal reference frequency is

25MHz.

− 1kHz:

−123dBc/Hz

− 10kHz: −130dBc/Hz

− 100kHz: −135dBc/Hz

− 1MHz:

−140dBc/Hz

The SM843251-156 is an excellent replacement for IDT

FemtoClocks®, with improved waveform integrity, and

jitter.

− 10MHz: −161dBc/Hz

− 20MHz: −166/dBc/Hz

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

• Industrial temperature range

• Green-, RoHS-, and PFOS-compliant

• Available in 8-pin TSSOP

Applications

• Gigabit Ethernet

• 10-Gigabit Ethernet

_______________________________________________________________________________________________________

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 +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-100110-A

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

October 2010

12 3 4 5 6 7

中文翻译

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与SM843251-156KA相关器件

型号	品牌	获取价格	描述	数据表
SM843251-156KATR	MICREL	获取价格	ClockWorks? 10-Gigabit Ethernet, 156.25MHz, Ultra-Low Jitter LVPECL Clock Frequency Synthe
SM843256	MICREL	获取价格	10 Gigabit Ethernet and SONET, 6 output, Ultra-Low Jitter LVPECL Frequency Synthesizer
SM843256	MICROCHIP	获取价格	The SM843256 provides a low-noise timing solution for high speed, high accuracy synthesis
SM843256KA	MICREL	获取价格	10 Gigabit Ethernet and SONET, 6 output, Ultra-Low Jitter LVPECL Frequency Synthesizer
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

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