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 .
• The instantaneous impedance of the transmission line • The Characteristic impedance of the transmission line Just referring to “…the impedance” may be a bit ambiguous Eric Bogatin 2000 Slide -10 www.BogatinEnterprises.com MYTHS Training for Signal Integrity and Interconnect Design Return Path in T Lines Current into signal line
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