Drain with large amplitude

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praveen450

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Hi,

My question is

If the amplitude of the signal at drain is very large, (say 0 to 2V sine wave) for 2.2V power supply. And if I bias the transistor greater than threshold voltage. Will the transistor operate in triode and saturation region?.

If so, will the transistor has power dissipation in it?.

Praveen
 

Hi Praveen,
Say you made Vgs(500mV) -VT(400mv) =100mv Then as long as your drain voltage is greater than 100mv Your Mos will be in saturation region. for ) to 100mv it will be in triode region.
For NMOS: Vds=> Vgs-Vt for Saturation
 

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