a) b) c) The amplifier whose equivalent model is given below has poles at 120 kHz,...

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a) b) c) The amplifier whose equivalent model is given below has poles at 120 kHz, 2 MHz and 8 MHz, with gm-30 ms. The first pole is generated by the input circuit, second pole is generated by the output circuit and the last pole is generated internally, with capacitances not shown in the equivalent model. Assume the third pole is not affected by CF. Calculate the voltage gain vo/vi, and write the transfer function of the amplifier. Is this amplifier stable? Explain your answer. Find the phase margin. Choose a value for Cp. What is the phase margin value? Find damping ratio values for B-1/3 and B=1. Draw the step responses for both cases. d) Find out the value of CF for 60° phase margin. Find the damping ratio value for the unity-gain feedback case. VI www. ≤R₁ =C₁ CE gVi WWW-II rim R₂=C₂ Vo a) b) c) The amplifier whose equivalent model is given below has poles at 120 kHz, 2 MHz and 8 MHz, with gm-30 ms. The first pole is generated by the input circuit, second pole is generated by the output circuit and the last pole is generated internally, with capacitances not shown in the equivalent model. Assume the third pole is not affected by CF. Calculate the voltage gain vo/vi, and write the transfer function of the amplifier. Is this amplifier stable? Explain your answer. Find the phase margin. Choose a value for Cp. What is the phase margin value? Find damping ratio values for B-1/3 and B=1. Draw the step responses for both cases. d) Find out the value of CF for 60° phase margin. Find the damping ratio value for the unity-gain feedback case. VI www. ≤R₁ =C₁ CE gVi WWW-II rim R₂=C₂ Vo

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To calculate the voltage gain and transfer function of the amplifier we need to analyze the given equivalent model Heres the stepbystep approach a Cal... View the full answer