Transcription of Differential Impedance …finally made simple
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Differential Impedance …finally made simple
Eric Bogatin 2000 Slide for Signal Integrity and Interconnect DesignDifferential simpleEric Bogatin PresidentBogatin Eric Bogatin 2000 Slide for Signal Integrity and Interconnect DesignOverview What s Impedance Differential Impedance : a simple perspective Coupled Transmission line formalism Measuring Differential Impedance Emulating effects of a split in return path Calculating Differential Impedance Eric Bogatin 2000 Slide for Signal Integrity and Interconnect DesignFirst Order Model of a Transmission Line(Loss Less Model) x(unbalanced transmission line)C=CL xL=LL xcapacitanceinductance (loop)The circuit analysis result:Z0=LLCL =1 LLCLTDLC totaltotal=CLCLCLCLCLCL Eric Bogatin 2000 Slide for Signal Integrity and Interconnect Design ..be the signal courtesy ICE Eric Bogatin 2000 Slide for Signal Integrity and Interconnect Design0th Order Model of Transmission LineCCCCCCCCC xCL= Capacitance per length [pF/in]C=CL x Q=CV,every t= xvI= Q t=vCL xV x=vCLVVinI, V definition of Transmission Line:What s the Impedance ?
Eric Bogatin 2000 Slide -1 www.BogatinEnterprises.com MYTHS Training for Signal Integrity and Interconnect Design Differential Impedance …finally made simple
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