超大規(guī)模集成電路第四次作業(yè)2016秋-段成華

Shownbelowarebuffer-chaindesigns.Calculatetheminimumdelayofachainofinvertersfortheoveralleffectivefan-outof64/1.Solution：由題可知：根據(jù)經(jīng)驗(yàn)為最合適的值，所以，所以，但是級(jí)數(shù)必須為整數(shù)所以取，又因?yàn)椋裕海浴?2)UsingHSPICEandTSMC0.18umCMOStechnologymodelwith1.8Vpowersupply,designacircuitsimulationschemetoverifythemwiththeircorrespondentparametersofN,f,andtp.Solution:根據(jù)（1）中計(jì)算知道三級(jí)最合適，所以驗(yàn)證如下：A）、一級(jí)無(wú)負(fù)載測(cè)本征延時(shí)代碼如下：.titlebuffer-chain1.lib'C:\synopsys\Hspice_D-2010.03-SP1\tsmc018\mm018.l'TT*set0.18umlibrary.optscale=0.1u*setlambda.optionspost=2list.temp27.globalvddVddvddgnd1.8vinvin00.9pulse01.825n5p5p49.99n100n$頻率為10MhzClvoutgnd0f$Cg1=2.46fF，負(fù)載為CL=157.44fF.subcktinvinoutwn=3.5wp=10t=7.5mnoutingndgndNCHl=2w=wnad='wn*t'pd='wn+2*t'as='wn*t'ps='wn+2*t'mpoutinvddvddPCHl=2w=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'.endsX1vinvoutinvwn=3.5wp=10t=7.5.op.tran5p5n.meastranvoutmaxmaxv(vout)from=5pto=5n.meastranvoutminminv(vout)from=5pto=5n$一級(jí).meastrantphl1+trigv(vin)+val=0.9+rise=1+targv(vout)+val='0.5*(voutmax-voutmin)+voutmin'+fall=1.meastrantplh1+trigv(vin)+val=0.9+fall=1+targv(vout)+val='0.5*(voutmax-voutmin)+voutmin'+rise=1.end1）一級(jí)無(wú)負(fù)載測(cè)得本征延時(shí)約為17ps；2）帶上64倍Cg1大小的負(fù)載測(cè)得延時(shí)為750.35ps，是本征延時(shí)的44倍B）、三級(jí)帶負(fù)載測(cè)延時(shí)代碼如下：.titlebuffer-chain3.lib'C:\synopsys\Hspice_D-2010.03-SP1\tsmc018\mm018.l'TT*set0.18umlibrary.optscale=0.1u*setlambda.optionspost=2list.temp27.globalvdd.paramfan=4Vddvddgnd1.8vinvin00.9pulse01.825n5p5p49.99n100nClvoutgnd0f$Cg1=2.46fF，負(fù)載為CL=157.44fF.subcktinvinoutwn=3.5wp=10t=7.5mnoutingndgndNCHl=2w=wnad='wn*t'pd='wn+2*t'as='wn*t'ps='wn+2*t'mpoutinvddvddPCHl=2w=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'.endsas='wp*t'ps='wp+2*t'mp3NAND-D1NAND-C1vddvddPCHl=0.2uw=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'.ends.subcktnor2NOR-A1NOR-D1NOR-B1wn='0.35u*1.34'wp='1u*1.34't=0.5u$優(yōu)化尺寸系數(shù)S3*.subcktnor2NOR-A1NOR-D1NOR-B1wn=0.35uwp=1ut=0.5u$未優(yōu)化尺寸系數(shù)S3mn2NOR-D1NOR-B1gndgndNCHl=0.2uw=wnad='wn*t'pd='wn+2*t'as='wn*t'ps='wn+2*t'mn1NOR-D1NOR-A1gndgndNCHl=0.2uw=wnad='wn*t'pd='wn+2*t'as='wn*t'ps='wn+2*t'mp1NOR-S1NOR-A1vddvddPCHl=0.2uw=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'mp2NOR-D1NOR-B1NOR-S1vddPCHl=0.2uw=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'.ends.subcktinv2inoutwn='0.35u*2.6'wp='1u*2.6't=0.5u$優(yōu)化尺寸系數(shù)S4*.subcktinv2inoutwn=0.35uwp=1ut=0.5u$未優(yōu)化尺寸系數(shù)S4mnoutingndgndNCHl=0.2uw=wnad='wn*t'pd='wn+2*t'as='wn*t'ps='wn+2*t'mpoutinvddvddPCHl=0.2uw=wpad='wp*t'pd='wp+2*t'as='wp*t'ps='wp+2*t'.endsX1vin2inv1X223vddvddnand3X334gndnor2X44voutinv2.op.tran5p3000p.meastranvoutmaxmaxv(vout)from=5pto=3000p.meastranvoutminminv(vout)from=5pto=3000p.meastrantphl+trigv(vin)+val=0.9+rise=2+targv(vout)+val='0.5*(voutmax-voutmin)+voutmin'+rise=2.meastrantplh+trigv(vin)+val=0.9+fall=2+targv(vout)+val='0.5*(voutmax-voutmin)+voutmin'+fall=2.end$Cg1=2.46fF，所以負(fù)載為12.3fF仿真結(jié)果如下：尺寸系數(shù)全部?jī)?yōu)化得到的tphl和tplh尺寸系數(shù)全部未優(yōu)化得到的tphl和tplhVout對(duì)比圖：粉線是尺寸系數(shù)全部未優(yōu)化、淺藍(lán)線是尺寸系數(shù)未優(yōu)化的輸出電壓、綠線是輸入電壓波形；從結(jié)果上來(lái)看，