标签: 155-mhz

A155-MHzclockrecoverydelayandphaselockedloopA155-MHzClockRecoveryDelay-andPhase-LockedLoopThomasH.Lee,Member,IEEE,andJohnF.Bulzacchelli,StudentMember,IEEEAbstract-Thispaperdescribesacompletelymonolithicdelay-lockedloop(DLL)thatmaybeusedeitherbyitselfasadeskewingelement,orinconjunctionwithanexternalvoltagecontrolledcrystaloscillator(VCXO)toformadelay-andphaselockedloop(DlPLL).Byphaseshiftingtheinputdataratherthantheclock,theDLLandDlPLLprovidejitter-peaking-freeclockrecovery.Additionally,thejittertransferfunctionoftheDlPLLhasalowbandwidthforgoodjitterfilteringwithoutcompromisingacquisitionspeed.TheDlPLLdescribedhereexhibitslessthan1"rmsjitterontherecoveredclock,independentoftheinputdatadensity.Nojitterpeakingisobse……