844001

Femtoclocks? Crystal-to-LVDS Clock Generator

GENERALDESCRIPTION The844001isaFibreChannelClockGenerator.The844001usesan 18pFparallelresonantcrystalovertherangeof20.4MHz-28.3MHz. ForFibreChannelapplications,a26.5625MHzcrystalisused.The frequencyselectpinallowsthedevicetogenerateeither106.25MHz or21

844001I

FemtoClock? Crystal-to-LVDS Clock Generator

FEATURES ?OneDifferentialLVDSoutput ?Crystaloscillatorinterface,18pFparallelresonantcrystal (20.4MHz-28.3MHz) ?Outputfrequencyrange:81.66MHz-226.66MHz ?VCOrange:490MHz-680MHz ?RMSphasejitter@106.25MHz,usinga26.5625MHzcrystal (637kHz-10MHz):0.74ps(typical

844001I

FemtoClock Crystal-to-LVDS Clock Generator; One Differential LVDS output\nCrystal oscillator interface, 18pF parallel resonant crystal (20.4MHz - 28.3MHz)\nOutput frequency range: 81.66MHz - 226.66MHz\nVCO range: 490MHz - 680MHz\nRMS phase jitter @ 106.25MHz, using a 26.5625MHz crystal (637kHz - 10MHz): 0.74ps (typical)\n3.3V or 2.5V operating supply\n-40°C to 85°C ambient operating temperature\nAvailable in lead-free (RoHS 6) package;

The 844001I is a Fibre Channel clock generator that uses an 18pF parallel resonant crystal over the range of 20.4MHz - 28.3MHz. For Fibre Channel applications, a 26.5625MHz crystal is used. The frequency select pin allows the device to generate either 106.25MHz or 212.5MHz from a 26.5625MHz crystal. To generate 187.5MHz for 12Gb Ethernet, a 23.4375MHz crystal is used. The 844001I uses our 3rd generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Fibre Channel and Ethernet jitter requirements. The 844001I is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

844001AGILF

Package：8-TSSOP（0.173"，4.40mm 寬）；包裝：卷帶（TR） 類別：集成電路（IC） 時鐘發(fā)生器，PLL，頻率合成器 描述：IC CLK GEN FIBRE CHAN 8-TSSOP

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844001AGILFT

Package：8-TSSOP（0.173"，4.40mm 寬）；包裝：卷帶（TR） 類別：集成電路（IC） 時鐘發(fā)生器，PLL，頻率合成器 描述：IC CLK GEN FIBRE CHAN 8-TSSOP

ETC

844001AGLFT

Package：8-TSSOP（0.173"，4.40mm 寬）；包裝：卷帶（TR） 類別：集成電路（IC） 時鐘發(fā)生器，PLL，頻率合成器 描述：IC CLK GEN FIBRE CHAN 8-TSSOP

ETC