3.11 Using the parameters given below, calculate the current through two nMOS transistors...

3.11 Using the parameters given below, calculate the current through two nMOS transistors in series ( see Fig. P3.11), when the drain of the top transistor is tied to V_DD, the source of the bottom transistor is tied to V_ss= 0 and their gates are tied to V_DD. The substrate is also tied to V_ss= OV. Assume that W/L = 10 for both transistors.

•k’=25μA/V²

•V_T0 = 1.0 V

•γ = 0.39 V^1/2

•|2ϕ_F| = 0.6 V

Hint: The solution requires some iterations and the body effect on threshold voltage has to be taken into account. Start with KCL equation.

Figure P3.11