(a) Sketch a diagram of the 8-pin operational amplifier and indicate the function of each pin. State four application areas of an operational amplifier. [6 marks] (b) Sketch the circuit diagram of a non-inverting Op-amp circuit and derive an expression for the output of the circuit. [4 marks] (c) You have been tasked as an engineer working with the Coca-Cola plant to design an inverting amplifier circuit to amplify input signal of 10mV from a sensor circuit that monitors the bottling operation. The amplifier circuit is to drive a load (an alarm) of 2k. To drive the load, the amplifier circuit must have a closed loop gain of 60 dB and an input resistance of 5k. Draw the circuit diagram and find the design parameters of the circuit. Find the input current to the amplifier circuit, . the output voltage required to drive the load, and the load current. [10 marks]