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Consider the CMOS circuit shown in the figure (substrates are connected to their respective sources)...

 

Consider the CMOS circuit shown in the figure (substrates are connected to their respective sources). The gate width (𝑊) to gate length (𝐿) ratios W/L of the transistors are as shown. Both the transistors have the same gate oxide capacitance per unit area. For the pMOSFET, the threshold voltage is -1 V and the mobility of holes is 40 cm2 /V.s . For the nMOSFET, the threshold voltage is 1 V and the mobility of electrons is 300 cm2 /V.s . The steady state output voltage 𝑉0 is ________. 

Answer: Mosfet current at saturation 

μCox/2 * (W/L)*(Vgs - Vth)^2

Given:

300*1*(V0 - 1)^2 = 40*5*(4-V0-1)^2

Or, V0 = 1.898V


So, Correct answer is Option C (less than 2V)

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