Calculate second-harmonic distortion in the common-source amplifier with a depletion load shown in Fig. 4.20a for a peak sinusoidal input voltage v i = 0.01

Calculate second-harmonic distortion in the common-source amplifier with a depletion load shown in Fig. 4.20a for a peak sinusoidal input voltage v̂_i= 0.01 V and V_DD= 3 V. Assume that the dc input voltage is adjusted so that the dc output voltage is 1 V. For simplicity, assume that the two transistors have identical parameters except for unequal threshold voltages.

Let W/L = 100, k€™ = 200 µA/V², and λ = 0.Assume V_t1|V_SB1=0 = 0.6 V, V_t2| V_SB2=0 = ˆ’ 0.6 V, Ï•_f = 0.3 V, and γ = 0.5 V^1/2. Use SPICE to verify the result.

Figure 4.20 a:

VDD M2 V M1