Exercise 6.9 Opamp configuration with series impedance in the loop

a)


An answer:
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zo = vo io io = vo − A(v+ − v−) zx = v−(1 + A) − Av+ zx v+ = vi ≡ 0 io = vo(1 + A) zx zo = R2 1 + A ⋅ 1 1 + jωR2C1

b)

An answer:
pict pict