By Huang, Wei. (eds.)
This quantity on brief classes on the 1997 IEEE overseas Symposium on Circuits and platforms covers a variety of themes with an emphasis on functions to info platforms. studies on cyroelectronics units and circuits current functionality features.
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015mm). 53mm, based on the pin separation. Equation (26) shows the estimation of G for the connector. 51×10 ⎠ ⎝ imaginary ⎠ Let’s take a closer look at the Zmag for the impedances we have found using the Complex Conjugation method. When plotted, it is easily seen that the magnitudes of the connector and trace impedances are asymptotically approaching their L equivalents as frequency increases, as seen in Fig. 9 and Fig. 10. C respective PCB Trace Zmag 1000 Zmag Impedance sqrt(L/C) 100 10 1 u eq 14 E+ 00 1.
Connector perturbation with a 1ns rise time highlighted. Fig. 18 illustrates the effect of the connector with the mitigation capacitance in place. Note that the strategy is effective in reducing the perturbation by 50%. This 30 value may not seem significant. However, as tolerances and realism are incorporated into the simulation the effect of a mismatched connector may cause the input voltage to exceed the limits of the driver circuits. Fig. 18. Input waveform with connector and mitigation. These simulations confirm that mitigation of connector parasitics can be accomplished using the “Pot Hole” method.
The addition of the connector to the simulation causes a local impedance mismatch from the 50Ω of the PCB transmission lines to the 67Ω of the connector. This change in impedance 28 causes a perturbation in the input waveform due to reflection, seen in Fig. 15. Fig. 15. Input waveform with connector. A slight digression from our “n+1” strategy is in order. To establish some bounds to the efficacy of connector mitigation, the rise time of the signal was varied to produce the waveforms shown in Fig.