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Resistance calculation of switch capacitor circuit

mkza1002

i am using cadence 6.1.5

I want to calculate resistance of a switch capacitor circuit using ladder topology.

i did dc analysis and plot Vs / Is  but difficult to calculate resistance from plot.

can anyone help me  with this

Thank you.

Parents

  • It rather depends what you mean by "resistance" - resistance from where to where? Some pictures would probably help.

    A DC analysis is not going to help, because a switch capacitor only has resistance by virtue of being switched. A DC operating point will only give you the currents and voltages for a static condition, and you'd need something like PSS (or one of the small signal analyses) to measure the time-averaged behaviour. I assume you understand the principles of switched capacitor design? 

    Regards,

    Andrew.

Reply

  • It rather depends what you mean by "resistance" - resistance from where to where? Some pictures would probably help.

    A DC analysis is not going to help, because a switch capacitor only has resistance by virtue of being switched. A DC operating point will only give you the currents and voltages for a static condition, and you'd need something like PSS (or one of the small signal analyses) to measure the time-averaged behaviour. I assume you understand the principles of switched capacitor design? 

    Regards,

    Andrew.

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