高速数字设计教程-Ch3_逻辑门(2)

20064723-13-23-33X2EmitterFollowerPDTOLOLCCTOHOHCCQuiescentRVVVVVVVVIVP))(())((21−−+−−=⋅=PDTOLOLCCTOHOHCCQuiescentRVVVVVVVVIVP))(())((−−+−−=⋅=PDTOLOLCCLQuiescentRVVVVIVP)()(_−⋅−=⋅=PDTOHOHCCHQuiescentRVVVVIVP)()(_−⋅−=⋅=ECLGaAsVO4VT=-5.2VVCC=0VOH=-0.9VOL=-1.7VT=-2VVCC=0VOH=-0.9VOL=-1.7)510(5.1)50(1575.0Ω=Ω==mWmWRPPDQuiescent)510(8.9)50(2.9891.4Ω=Ω==mWmWRPPDQuiescentVT=-2VVT=-5.2V1/6.5VO5tr0€1τ=RE//RPD⋅C=RE⋅CYC=10pfRPD=510Ωτ=RE⋅C=7Ω×10pf=70pstr=2.2τ=2.2×70ps=154psREtr=2.2τ=RE⋅CECLECL10K2ns10KH1nsECLinPS300~400psECL6tf1€0Q1RPDC⎟⎠⎞⎜⎝⎛−−⋅⋅=kkCRtPDf9.011.01lnRPDCQ1Q1TOHOLOHVVVVk−−=ÙVT=-5.2VVCC=0VOH=-0.9VOL=-1.7k=0.164,tf=0.164RPD⋅CÙVT=-2VVCC=0VOH=-0.9VOL=-1.7k=0.987,tf=0.987RPD⋅C7VT-2V-5.2V VT=-2VVT=-5.2V1/6.5 VT=-2VVT=-5.2V6ZECL8 1VVOHmin:1.2V1.5V;VOLmax:0.4V0.4V/5pf200MHz64mA0.8V0.4V1.2V03.OCOD BTLGTLOCODBTLBackplaneTransceiverLogicGTLGunningTransceiverLogic TTLOCCOMSODOCOD9BTL,GTLBTLGTL BTL OC VIH=1.62V;VIL=1.47V GTL OD VIH=VREF+50mVVIL=VREF-50mV IOL=40mAIOH≈0VTVT10 ECL GTLVOH=VTVEE=0 VOL=0.4VVT=1.2VRP=50ΩXPOLOLTQuiescentRVVVIVP)(21−=⋅=PEEOLOLTEEOHOHTQuiescentRVVVVVVVVIVP))(())((21−−+−−=⋅=mWVVVPQuiescent2.3504.0)4.02.1(21=Ω⋅−=VT11GTLFCLK=100MHzC=5pf∆V=0.8VY2VCFPActive∆⋅⋅=212628.010510502⋅×⋅×=∆⋅⋅=−VCFPCLKActivemW16.0=ECLGTL124.CurrentSource VOHT1T4T2T3VOLT2T3T1T4LVDS IEEE1596.31996ANSI/TIA/EIA-6441995/2000655Mbps/1.923Gbps 3.5mA100Ω350mV 13XYPActive=F⋅C⋅∆V2C=5pfF=100MHzPActive=1×108×5×10-12×0.352=0.06125mW×LVDS14 LVDSDS90C031415.   PH=(VH-VT)2/R PL=(VL-VT)2/RXTotemPole VT=0VH=3.5VR=50ΩPH=0.245W=245mWPL=0.0032W=3.2mWP=PH+PL/2=124mW R=5KΩPH=(VH-VT)2/R=3.52/5×103=0.00245W=2.45mWTotemPoleRVCCAB16YECL/PECL VT=-2VR=50ΩPH=-0.9--22/50=24.2mWPL=-1.8--22/50=1.8mWP=PH+PL=26mW VT=-5.2VR=510ΩPH=-0.9--5.22/510=36mWPL=-0.9--5.22/510=24mWP=PH+PL=60mWZOCGTL VT=VH=1.2VPH=0 PL=(VL-VT)2/R=0.82/50=12.8mWP=PH+PL/2=6.4mWVT17P=I2⋅R=3.52×100=1.225mW[LVDSLVDS183-2Speed tpd tr/tf19Speed tpd tr/tf tpd PCB  20.dV/dtrKneertftVdtdV5.0max=⇔∆= fKneePCBrMBrMBBMBBtCRtVCRVdtdVCRVVVCrosstalk=∆∆=∆=∆=11  €€21.dI/dt  trdttdVCRtVIIICR)()(+=+=dttVdCRdttdVdttdI)(1)()(2⋅+⋅=22rtVdttdV∆≈)( CtVdttdIrC⋅∆=252.1)(CtVRttVdttdIrrxma⋅∆+⋅∆=252.11)()( RRtVdttdIrR1)(⋅∆=23CtVRttVdttdIrr⋅∆+⋅∆=2max52.11)()(  24   trdV/dtdI/dt25⎟⎠⎞⎜⎝⎛−−⋅⋅=kkCRtPDf9.011.01lnTOHOLOHVVVVk−−=