The Art of PCB DesignGood PCB design is a discipline that takesyears to master.Reliable High-speed, mixed-signal designsrequire a great deal of theoreticalknowledge and practical understanding tobe done properly.We’ll cover many important concepts at ahigh level today.AgendaPCBs 101Good High-Speed PCB Design PracticesThe Power of Power and Ground planesProper use of decoupling capacitorsThe True Nature of Resistors and Capacitors in High-speed DesignsHigh-speed Signal Propagation - Wires or Transmission Lines?Impedance Mismatches, Series and Parallel TerminationManaging EMIMixed Signal PCB LayoutGrounding Mixed Signal Data Acquisition SystemGround Plane in Mixed Signal DesignsPower Filtering & decouplingParasitic ConsiderationControl Differential line impedance Small Signal LayoutConsider Track Resistor LossProper grounding shielding cableMinimize PCB Leakage by Guard RingPrevent PCB Heating Temperature SensorsPCB BasicsPCB Units of MeasurementPCB methodologies originated in the United StatesUnits of measurement are therefore typically inImperial units, not SI/metric units.Board dimensions are commonly measured in inches.Dielectric thickness & conductor length and width typicallymeasured in inches and “mils”.1 mil = 0.001 inches1 mil = .0254 mmConductor thickness measured in ounces (oz).The weigh of conductor metal in a square foot of material.Typical thickness0.5oz = 17.5μm1.0oz = 35.0μm2.0oz = 70.0μm3.0oz = 105.0μmPCB
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