Struggling in designing PMOS based Common-Drain Amplifier

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ElieKhoury

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I am trying to design a PMOS based Common-Drain with 2 Power Supplies.
Every time I try simulating the PMOS starts out in the triode region, then after a while enter the saturation region.
How can I fix that? It is required that the gain of the amplifier is greater than -3dB.



 

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I can't recognize an amplifier, soure and drain are shorted by voltage sources, where's the output? A common drain amplifier needs current source or load resistor at source node.
 

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FvM said:
I can't recognize an amplifier, soure and drain are shorted by voltage sources, where's the output? A common drain amplifier needs current source or load resistor at source node.
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Yes I know, but I am still at the stage of working out the voltages and characteristics (Vth, VA, gm...) of the PMOS before I add the current source. The output is obviously at the source as it is a common-drain.
 

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