Analyse the circuit shown in Figure 2.1, to determine how the output voltage,Vo, depends on the three inputs, Va, Vb and Vc. Include a clear equation showing Vo as a

function of the three inputs. It can be assumed that the operational amplifiers employed are ideal. i) Design a non-inverting amplifier using an op-amp with two resistors to provide a gain of 4. ii) The op-amp used for your non-inverting amplifier has a typical gain bandwidth product (unity gain bandwidth) of 1 MHz. Calculate gain in decibel. iii) Sketch the gain Bode plot frequency response you would expect for this circuit. Indicate the dc gain in decibels and the – 3dB cut off frequency, fH.