Solve the below:
Q: Transistor Q1: in the circuit of Fig. is operating as a CE amplifier with an active load provided by transistor 2 which is the output transistor in a current mirror formed by Q2: and Q3:
(a) Neglecting the finite base currents of Q2: and Q3: and assuming that their VBE ?0.7 V and that Q2 has five times the area of Q3: find the value of I.
(b) If Q1: and Q2: are specified to have /VA / =30 V, find ro1 and ro2 and hence the total resistance at the collector of Q1:
(c) Find rπ1 and gm1 assuming that β1 = 50. (d) Find Rin , Av , and Ro
