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Tony Stewart EE since 1975
Tony Stewart EE since 1975
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You would analyze up to the BW of the system traces.

retracted {e.g. 1 GHz to 10 GHz for ethernet using max speed.}

Up to several hundred MHz at most.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

You would analyze up to the BW of the system traces.

retracted {e.g. 1 GHz to 10 GHz for ethernet using max speed.}

Up to several hundred MHz at most.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

You would analyze up to the BW of the system traces.

retracted {e.g. 1 GHz to 10 GHz for ethernet using max speed.}

Up to several hundred MHz at most.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

added 43 characters in body
Source Link
Tony Stewart EE since 1975
Tony Stewart EE since 1975
  • 152.2k
  • 3
  • 60
  • 191

You would analyze up to the BW of the system traces. e.g. 1 GHz

retracted {e.g. 1 GHz to 10 GHz for ethernet using max speed.}

Up to 10 GHz for ethernet using max speedseveral hundred MHz at most.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

You would analyze up to the BW of the system traces. e.g. 1 GHz to 10 GHz for ethernet using max speed.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

You would analyze up to the BW of the system traces.

retracted {e.g. 1 GHz to 10 GHz for ethernet using max speed.}

Up to several hundred MHz at most.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.

Source Link
Tony Stewart EE since 1975
Tony Stewart EE since 1975
  • 152.2k
  • 3
  • 60
  • 191

You would analyze up to the BW of the system traces. e.g. 1 GHz to 10 GHz for ethernet using max speed.

PCB's role is to keep the impedance low enough until the package takes over. If the PCB impedance is too high at 200MHz, it can cause the package to resonate, rendering the on-chip caps less effective.