Find output current of NMOS transistor

[ddta1050]

Homework Statement

Vtn = 0.4V
W/L = 10
NMOS1
Saturation Region
Drain = 2.5V
Gate = 1.9V
Source = 0V

Vtn = 0.4V
W/L = 10
NMOS2
Triode/Linear/Ohmic Region
Drain = 0.5V
Gate = 2.2V
Source = -2.3V

tox = 9um
un = 250cm^2/V
W/L = 10

Homework Equations

Saturation: Id = Kn * (Vgs-Vt)^2/2
Triode/Linear/Ohmic: Id = Kn * ((Vgs-Vt)Vds - Vds^2/2)

The Attempt at a Solution

tox = 9nm
un = 250cm^2/V
cox = eox/tox = (3.9*8.85*10^-14F/cm)/9nm = 0.003835F/m^2
kn = un*cox*W/L = 95.875uA/V^2

NMOS1
Ids = Kn * (Vgs-Vt)^2/2 = 1.08mA

NMOS2
Vds = Vd - Vs = 0.5-(-2.3)=2.8V
Ids = Kn * (Vgs-Vt)(Vds) - Vds^2/2) = 7.248mA

 

[phyzguy]

These look OK to me.