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saturation state OP parameters dont match DC saturation formula

robert 21

Hello i am trying to match the following circuits OP parameters with saturation formulla.

When i looked at the parameters ,

region =2

beta=1.911*(10^-3)  ( miu_0*Cox )

vth=0.473

I_ds=101.64*(10^-6)

i put W=1u L=180n as transistor sizes.

But when i put them into the saturation state formula and tried to extract W which is in the formula  X=10^-6 it gave me X=8.95326×10^-8

I_ds=miu_0*Cox*(W/L)(Vgs-Vth)^2

101.64*(10^-6)=1.911*(10^-3)*(x/(180*(10^-9))*(0.8-0.473)^2

Where did i go wrong?

Thanks

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