Stacked MOSFETs Small Signal Model

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Tarquin Hardwicke

Joined Oct 23, 2013
7
Two stacked MOSFETs as in the diagram, how can the node voltage \(V_x\) be determined (ignoring all body and channel length modulation effects)?


\(i = g_{m1}V_{GS_1} = g_{m2}V_{GS_2}
V_x = -V_{GS_2} = -\frac{g_{m1}}{g_{m2}}V_{GS_1}\)?
 

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