Q-4) (15 pts) An OzU student is designing a multistage amplifier for his/her radio as shown in the figure below and lik...
Q-4) (15 pts) An OzU student is designing a multistage amplifier for his/her radio as shown in the figure below and like to make sure that is can be stable if used in unity feedback. Assuming the same gm of 1mS for all the MOS transistor devices: a-) Find out the open loop end-to-end DC gain of his amplifier chain (4 pts). b-) Plot the open loop Bode diagram of the system (4 pts). c-) If you were asked to use minimum amount of capacitance to compensate this amplifier where and how big of a capacitor would you be placing to get a phase margin of 45 deg ?(Hint: Use Miller) (7 pts) R1-1K R1-10K R2-100K Vout gm C1-10pF Bm C3-1pF
Q-4) (15 pts) An OzU student is designing a multistage amplifier for his/her radio as shown in the figure below and like to make sure that is can be stable if used in unity feedback. Assuming the same gm of 1mS for all the MOS transistor devices: a-) Find out the open loop end-to-end DC gain of his amplifier chain (4 pts). b-) Plot the open loop Bode diagram of the system (4 pts). c-) If you were asked to use minimum amount of capacitance to compensate this amplifier where and how big of a capacitor would you be placing to get a phase margin of 45 deg ?(Hint: Use Miller) (7 pts) R1-1K R1-10K R2-100K Vout gm C1-10pF Bm C3-1pF