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Official definition and formula for DC operating point parameters

BaaB

It took me a lot of time finding the definition and formula of operating point parameters in DC analyis. However, I couldn't find any official definition and formula explaining how these parameters are calculated. 

I searched help by "spectre -h" and "cdnshelp" but these only give the name of these parameters not how they are calculated. 

Could you tell me where can I find it?

Thank you.

Parents
  • BaaB

    Thank you.

    I looked at it and actually I don't find the formula explaining how these parameters are calculated.

    For example, section Operating-Point Parameters (page 1009):

    These are what I want to know so I list them here so they are not actually the order in the document.

    ids (A)                 Resistive drain-to-source current.
    betaeff (A/V2)    Effective beta.
    ron (Ohm)          On-resistance.
    id (A)                   Resistive drain current.

    As you can see, these are just the names not how they are calculated.

Reply
  • BaaB

    Thank you.

    I looked at it and actually I don't find the formula explaining how these parameters are calculated.

    For example, section Operating-Point Parameters (page 1009):

    These are what I want to know so I list them here so they are not actually the order in the document.

    ids (A)                 Resistive drain-to-source current.
    betaeff (A/V2)    Effective beta.
    ron (Ohm)          On-resistance.
    id (A)                   Resistive drain current.

    As you can see, these are just the names not how they are calculated.

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