MOS Differential Pair (VCM-MAX)

Discussion in 'Homework Help' started by jegues, Sep 30, 2011.

  1. jegues

    Thread Starter Well-Known Member

    Sep 13, 2010
    735
    43
    See figure attached.

    When finding, V_{CMmax}, what is the reason for using V_{D} as opposed to v_{DS}?

    For the edge of saturation and triode (i.e. where VCMmax occurs),

    v_{GS} - V_{t} = v_{DS}, \quad \quad v_{GS} = V_{CMmax}

    \Rightarrow V_{CMmax} = Vt + v_{DS}

    ?
     
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