An operational amplifier has a nominal gain of 100 dB. The gain is constant from 1 to 10Hz and reduces by 20 dB per octave above 10 Hz. Sketch, approximately to scale, the frequency response curve, using a logarithmic scale for the frequency. i) Therefore, determine the gain bandwidth product. ii) Determine the bandwidth of the amplifier when the closed loop voltage gain is 40 dB.