(Solved): B. Now consider the multistage amplifier given below in Fig. 4.3. Fig. 4. 5. ...

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B. Now consider the multistage amplifier given below in Fig. 4.3. Fig. 4. 5. Multistage Amplifier i. Assuming for the two transistors $${\mathrm{K}}_{\mathrm{n}}=0.55\mathrm{mA}/{\mathrm{V}}^2,{\mathrm{V}}_{\mathrm{Tn}}=1.4\mathrm{V}$$, and $$?=0.03\mathrm{mA}$$. Determine the values of the resistors $$R_1,R_D,R_4,R_S$$ if $$V_{DD}=12V,I_{DQ1}=I_{DQ2}=1\mathrm{mA},V_{DS1Q}=$$ $${\mathrm{V}}_{DSQ2}=8.1\mathrm{V},{\mathrm{R}}_2={\mathrm{R}}_3=47\mathrm{k}?$$. ii. Determine $${\mathrm{R}}_{\text{in }},{\mathrm{R}}_0$$. iii. Determine the overall small signal gain $$A_v=v_0/v_s$$ with $$R_L=1\mathrm{k}?$$.