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body effect and region of operation

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myboyki

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I am trying to find a q point. There is a body effect, but my vtn is 1 anyways. What region of operation should I assume. Saturation region or triode region?
 

analogLow

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I am trying to find a q point. There is a body effect, but my vtn is 1 anyways. What region of operation should I assume. Saturation region or triode region?

Assuming that your Vgs (gate-to-source voltage) is larger than Vtn, then the operation region only depends on Vds (assuming the basic square-law model). In that case, if Vds is greater than Vgs-Vtn, then you are in the saturation region, else the triode. Of course if you are using a newer digital process, the the rules change and so the region definitions.

Cheers,
analogLow
 

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