电路板设计规范

. PCB精选文档 .31929394PCB115125.1125.2135.3135.4135.5146146.1146.2 146.3 156.4 156.5 176.5.1176.5.1.1176.5.1.2186.5.1.3186.5.1.4186.5.1.5196.5.1.6196.5.2196.5.2.1 196.5.2.2216.5.3 226.6DFM236.6.1PCB236.6.2 ID246.6.3246.6.4 SMD246.6.4.1 SMD246.6.4.2 SMD246.6.4.3 SMD256.6.5THD266.6.6 276.6.7 276.6.7.1276.6.7.2 286.6.8286.6.8.1 /286.6.8.2 286.6.8.3306.6.8.4 306.6.9316.6.9.1316.6.9.2 326.6.9.3 326.6.9.4 326.6.10 326.6.10.1 326.6.10.2 336.6.10.3 BGA336.6.10.4336.6.10.5336.6.11336.6.12 346.6.12.1 346.6.12.2346.6.12.3346.6.12.4346.6.12.5356.6.13 366.6.13.1 366.6.13.2 366.6.14 366.6.14.1 366.6.14.2376.6.14.3376.6.14.4 376.7DFT386.7.1PCB ICT386.7.1.1 ICT386.7.1.2396.7.1.3396.7.1.4 ICT416.7.2416.8EMC416.8.1426.8.1.1426.8.1.2426.8.1.3436.8.2EMC436.8.2.1436.8.2.1446.8.2.2446.8.3EMC446.8.3.1 446.8.3.2456.8.3.3456.9456.10466.10.1466.10.2-48V476.10.3E1/T1486.10.4486.10.5V35486.10.6PGND486.10.7ESD496.10.8497507.1507.1.1507.1.2517.1.3517.1.4527.2567.2.1567.2.1.1567.2.1.2577.2.1.3587.2.2597.2.3 597.3 597.3.1597.3.2607.3.3607.3.3.1607.3.3.2Fanout607.3.3.3Fanout607.3.4617.3.4.1PCB617.3.4.2PCB627.3.4.3PCB637.3.4.4PCB657.3.5657.3.5.1657.3.5.2Spread Wires657.3.5.3657.4668 668.1668.1.1668.1.2678.2678.2.1678.2.2QA688.2.3688.2.4698.3698.3.1698.3.25708.4708.4.1708.4.2708.5PCBPCB709719.1719.2719.3719.3.1719.3.2739.3.2.1739.3.2.2739.3.3759.3.4759.3.5759.3.5.1759.3.5.2769.3.5.3769.3.5.4769.3.5.5769.3.5.6769.3.5.7769.3.677107910.17910.27910.3PCB7910.4 SIECO8110.5 PCB8110.68210.7PCB8210.88410.8.18410.8.28610.8.38710.8.48911 92PCB1 CAD/SICAD/SIPCB2 1GB4588.388 2CAD/SI3DKBA3128-2001.10PCB1 PCBprinted circuit boardschematic diagramSchematic Netlistbackplane boardTOPBOTTOMTOPpitch0.65mm pitch1.0mmStand OffPCBPCBPCB board thicknessplated through holeNPTH unsupported holeVia holeblind viaTOPBOTTOMburied viaVia in pad solder mask or solder resist)Land (DIP dual-in-line package (SIP single-inline package (SOIC small-outline integrated circuitTHT SMT wave soldering reflow solderingPCBsolder bridging solder ball solder projectionTombstoned component Active layerBack annotationPCBBOMBill of materialsphotoplottingDRCDesign rules checkingEMCElectromagnetic compatibility)ANSI C64.14-1992)2 PCBCAD/SICAD/SICAD/SI1?1 PCB1)CAD/SI2)EMCDFM/DFT3) IBISSPICE EDAPCBPCB4)DFMEMC5)CAD/SIPCB 1 1.1 CAD/SICADSIPCB1.2 1)2)3)4)5)6)1.3 1)/PCB/2)PCBPCB1.4 1)2)PCB1.5 PCB1)PCBFR42)PCBHDIPCBHDI2 2.1 1)PCB2)PCBPCB2.2 1)PCB2)3)4)5)PCB6) PCB 7)5mm/197mil2.3 1)2)6.53)2.4 1)SIDFMDFTEMC2) 3)4)PCBSMTSMT+SMTSMT+5)6)7)PCB8)50milIC25 25 25 25 mil5mil9)fanout23?1 FANOUT1?2 FANOUT2 ICT6.5DFT10)EMC6.5EMC6.8EMC11)PCB12)13)EMCCMM1.1 specctraquestCAD41.1.1 1.1.1.1 Tpropmax=Tcycle - Tmin_setup - Tmax_out_valid +/- Tskew - Tjitter - TcrosstalkTpropmin=Tmin_in_hold - Tout_hold +/- Tskew + Tjitter + Tcrosstalk:TpropmaxTpropminTcycle Tmin_setup Tmax_out_validTco,TskewPINTjitter Tcrosstalk Tmin_in_holdTout_holdTjitter+Tcrosstalk0.5ns1)SPECCTRAQuest2)SPECCTRAQuestBuffer Delay selectionFrom LibaryBuffer Delay First switchfinal settle Delay buffer delay1.1.1.2 PCBVOLTAGEVOLTAGE_LAYERROUTE_TO_ SHAPESPECCTRAQuest(S