Q5 .Consider the differential amplifier shown in Figure 5 with transistorparameters B=150, VBEO) = 0.7 V, and V. Design the circuit such that the Q-point values are Ic-Ic 100μA and voi voz 1.2 V for vi v₂0.

What is the DC gain of the given circuit above?

Figure 6 (a) shows the circuit diagram for a differential amphfier. You may assume that M and M, have identical parameters. Referring to Figure 6 (a): (a) What kind of amplifier is it? What is its role in a three-stage op amp? Draw the small signal equivalent eircuit and derive the differential voltage gain Aag. For the analysis consider RDI RD2 >>Rp State any assumption. (b) RD. gml gm gm, and r re=r What is the new Adr in the circuit of Figure 6 (b), where a PMOS current source has replaced the two drain resistors Ror R Rp and a NMOS current sink has replaced the source resistor Rs? (c) What are the advantages in using the circuit of Figure 6 (b) instead of Figure 6 (a) to realize an op amp? (d) Ven Ms Mg Rp1 Rpa Vo HM, My M Ma M3 Vss 0 V Vss 0 V Figure 6(b) Figure 6 (a)

Q3) For the regulator circuit shown in figure below, Vin-15 V, Rs-10 2, Vz-9.1 V, VBE=0.8V, and R=40 2. What are the values of output voltage, input current, the load current, and collector current. 102016 2-8594 Vin R$ Ⓡ R₂ Vout

Draw a circuit diagram of a Class-C power amplifier. Explain the reason why a Class-C power amplifier is in general more efficient than a Class-B power amplifier. What is the main disadvantage of Class-C power amplifiers?