标签: xor
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TowardsAND／XORbalancedsynthesis-LogiccircuitsrewritingwithXOR
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Asimplecircuitconsistingofacomparatorandanexclusive-ORgateissufficienttodoublethefrequencyofareferencesignal.……
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Abstract:Asimplecircuitconsistingofacomparatorandanexclusive-ORgateissufficienttodoublethefrequencyofareferencesignal.Maxim/Dallas>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSKeywords:comparators,exclusive-ORgates,XORgates,frequencydoublersAug27,2004APPLICATIONNOTE3327SimpleCircuitDoublesInputFrequencyAsimplecircuitconsistingofacomparatorandanexclusive-ORgateissufficienttodoublethefrequencyofareferencesignal.Theversatilephase-lockedloop(PLL)allowsmultiplicationofareferencefrequencywithanoperatingfrequencythatrangesfrom"DCtodaylight."APLLisoverkillforsomeapplications,however,especiallyiftheinputfrequencyneedsonlytobedoubled.Forthosecasesasimplerapproach―suchasthecircuitinFigure1―willdothejobjustaswell.Figure1.Thiscircuitdoublestheinputfrequency.Thereferen……
