(Solved): 3. a) Based on the common source amplifier circuit shown in Fig. Q3a, suppose a limited voltage su ...

3. a) Based on the common source amplifier circuit shown in Fig. Q3a, suppose a limited voltage supply $$V_{DD}$$ is imposed such that only a single load is allowed to insert between $$V_{DD}$$ and $$V_{\text{out }}$$, (i) choose the type of load required to have a fairly constant DC current while achieving a reasonably high voltage gain. (2 Marks) (ii) sketch the small signal model circuit based on Q3a)i), assuming $$??=0$$ and $$?=0$$. (3 Marks)