高速信号设计入门

TrTfTrTf6~46~40.144ns/inch~0.182ns/inchSignalIntegrityPCB2233PCBPCBPCB12711,dU/dz=(R+jwL)IdI/dz=(G+jwC)UU=Aerz+Be-rzI=Aerz/Zo-Be-rz/Zor=(R+jwL)(G+jwC)Zo=(R+jwL)+(G+jwC)R,GjwLjwCZo=L/CFR4180ps/inch227(Zs-Zo)/(Zs+Zo)(ZL-Zo)/(ZL+Zo)ZoZsZL(Zs-Zo)/(Zs+Zo)=0(ZL-Zo)/(ZL+Zo)=0Zs=ZoZL=ZoPCB??w???thA??w???th??h1B327??w??t??hC??w??hh1tD???th??w??wsE??w??t????wshF??w?hhh1tG??ws?hh1tH427EMIZo=L/CPCB333310~205033PCBPCBPCBPCBPCBPCB527(ZL-Zo)/(ZL+Zo)PCBPCBrs17Rs33Z050ZtTpd2ns6270V2.5V2nS2.5V2.5V2.5V2.5V5V2nS7275VRS=Z0-R0RSZ0R0RSZ0-R0827theveninTTL3VR1/R2=2/3R1||R2=Z01V927ACRCACRCwPCBPCBwPCBw1027)wwPCB