(Solved): Jia. Hua designed an audio amplifier based on the cascading of several operational amplifiers as sh ...

Jia. Hua designed an audio amplifier based on the cascading of several operational amplifiers as shown in Figure 4 below. Assume that all operational amplifiers are ideal. Figure 4 (a) State the behaviour and characteristics of an ideal op-amp. (S marks) (b) Express V2 as a function of Vin. (8 marks) (c) Express VOUT in terms of V2, (6 marks) (d) Derive the overall gain of this amplifer and state the purpose of this amplifier. (6 marks)