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NMOS

Three regions of conduction for NMOS
 Cut-off: 0<Vgsn<Vtn
 Linear: 0<Vdsn<Vgsn-Vtn, Vgsn>=Vtn>0
 Saturation: 0<Vgsn-Vtn<Vdsn,
Vgsn>=Vtn>0
 Vdd>0
 Vtn=0.2Vdd
© Digital Integrated Circuits2nd
Devices
PMOS
Dual of NMOS
 Three regions of conduction for PMOS
 Cut-off: 0>Vgsp>Vtp
 Linear: 0>Vdsp>Vgsp-Vtp, Vgsp<=Vtp<0
 Saturation: 0>Vgsp-Vtp>Vdsp,
Vgsp<=Vtp<0
 Vdd>0
 Vtp=-0.2Vdd

© Digital Integrated Circuits2nd
Devices