03_阻抗控制[1]

—2008-08-0801-2„„PCBPCB„01-3001-401-5„PCB„„01-6PCBPCBCMOSTTL50110PCBPCB01-7PCBPCBPCBPCBPCB20~75“”2570PCB01-8EMC2570100PCBPCBPCBPCB01-901-1001-1101-12„PCB„PCB„„PCB01-13PCB„„„PCB01-1410%twhawbhtb++=twhZr8.098.5ln41.1870ε+=)8.0(98.5ln600twbZrπε01-1501-164.2~5.2POLAR4.24.701-17POLAR01-18PCB1.5Sig/Gnd/Power/Sig1.235/352116„L1/L4507~8mil3513~15mil„L1/L4(100)/5/55/66/76/86/9(mil/mil)„L1/L4(75)/10/710/611/911/1010/11(mil/mil)18m0.11mm35m1.2mm35m0.11mm18mL1L2L3L401-1901-2001-21PCBPCBPCB01-22PCB01-23PCB01-2401-2501-2601-2716PCB77FR-450PCB5.9mil.TDR01-28