Solution 5:

(i) Static power dissipation :

Idd(OL) = K[(VGS - Vt)Vo - (Vo^2)/2]

= 60[( 4 - 0.9 ) 0.8 - (0.8^2)/2]

Idd(OL) = 129.6 µA

Idd(OH) = 0

therefore PDD(avg) = Idd(OL) x Vdd/2

= 324 µW

(ii) Dynamic power dissipation ;

P(Dyn) = CL . f . Vdd^2

= 2 x 10^-12 x 10 x 10 ^6 x (5^2)

= 500 µW

(iii) Total power dissipated ;

= 324 + 500 = 824 µW