Question

Because of a manufacturing error, the open-loop gain of each op-amp in the circuit is only AoL=100A_{o L}=100. The open-loop input and output resistances are Ri=10kΩR_i=10 \mathrm{k} \Omega and Ro=1kΩR_o=1 \mathrm{k} \Omega, respectively. Determine the closed-loop parameters: (a) RifR_{i f}, (b) RofR_{o f}, and (c) ACL=vO2/vIA_{C L}=v_{O 2} / v_I. (d) What is the ratio of the actual closed-loop gain to the ideal value?

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Answered 1 year ago
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An amplifier with manufacturing error is given. We need to determine, (a) input resistance RifR_{if} (b) output resistance RofR_{of} (c) closed loop gain ACLA_{CL} (d) ratio of actual closed loop gain to the ideal value.

Given that, AOL=100A_{OL}=100 Ri=10 kΩR_i=10\mathrm{~k\Omega} Ro=1 kΩR_o=1\mathrm{~k\Omega}

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