The Operational Amplifier - Closed-Loop Frequency response

5 important questions on The Operational Amplifier - Closed-Loop Frequency response

Determine the midrange gain in dB of each amplifier in Figure 12–73. Are these open-loop or closed-loop gains?

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A certain amplifier has an open-loop gain in midrange of 180,000 and an open-loop critical frequency of 1500 Hz. If the attenuation of the feedback path is 0.015, what is the closed-loop bandwidth?

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What is the unity-gain bandwidth? Given that fc(ol)=750 Hz, Aol=89 dB, and fc(cl)=5.5 kHz

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For each amplifier in Figure 12–74, determine the closed-loop gain and bandwidth. The op-amps in each circuit exhibit an open-loop gain of 125 dB and a unity-gain bandwidth of 2.8 MHz.

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Which of the amplifiers in Figure 12–75 has the smaller bandwidth?

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