1. You are given the op amp-based amplifier circuit shown below. a. Assuming the op amp is ideal, derive the expression and find a numerical value for the closed-loop gain of the circuit. b. Now assume the op amp has a gain of 60dB (A=1000), -3dB bandwidth of 10MHz, input resistance of 100k2, and output resistance of 1009. Find numerical values for the closed-loop gain and closed-loop frequency response of the circuit. What is the fractional error in closed-loop caused by the non-idealities? Find the output impedance assuming the feedback network doesn't have any loading effects at the output. c. d. R₂ Vin 1K0 A R₁ 5ΚΩ Vout

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Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.