6. The noninverting buffer op-amp configuration shown below provides a direct implementation of the feedback loop of Fig. 10.1 (in Sedra-Smith's book). Assuming that the op-amp has infinite input resistance and zero output resistance, what is $eta$? If $A = 1000$, what is the closed-loop voltage gain? For $V_s = 1V$, find $V_o$ and $V_i$. If A decreases by 10%, what is the corresponding percentage decrease in $A_f$?
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This means the input signal is directly connected to the non-inverting input of the operational amplifier (op-amp), and the output is fed back to the inverting input, typically through a feedback resistor network. However, since it's a buffer configuration, the Show more…
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