文档介绍：Lecture#23OUTLINEMaximumclockfrequency-threefiguresofmeritContinuously-switchedinvertersRingoscillatorsICFabricationTechnologyDopingOxidationThin-filmdepositionLithographyEtchReading(Rabaeyetal.)-?2)Thestagedelaywhentheinputisacontinuoussquare-=vin2vin1+-VDDMN1MN2MP3MP4Therearetwoothermeasuresofperformancewhichwecanalsoconsider:1)WehavedefinedtheunitdelaytpasthetimeuntilVout1reachesVDD/2startingateither0V(rising)orVDD(falling).)Thedelayofapulsethroughamulti-stage“ringoscillator”,.(DesignproperratioofWptoWn)Vvout1=vin2vin1+-VDDMN1MN2MP3MP4VDDBecausewhenitreachesthisvalue,.WedefinedtheinverterdelaytpHLasthetimeuntilVout1reachesVDD//(tpHL+tpLH)ates)withSquare-WaveClock1/fVDDIn’sfindrelationshipbetweenmaxandminvaluesvhandvlaftermanymanycycles:(1)Pulldown:(2)Pullup:Example:cansolvesimultaneouslygivenDt/,VXLetsfollowVXforVINstartingatt=0VlVhSquare-WaveDrive1/fVDDIn(rememberthesteeptransfercurve).Let’,inverter2switches,andwhenitcrossesupthroughvih,?IfVXdoesnotpassthroughVilorVih,:Increasefuntilinverter2failstotogglebecauseitsinputdoesnotpassthroughitsthreshold(s).Ingeneral,RpRn,:Nowconsiderthesquare-wavedrivecase:TakeV