Operational Amplifier Fundamentals – 189

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189. The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 M, Zout = 80 , and Aol = 250,000.

(a) 4.7 k
(b) 22.7 k
(c) 3 M
(d) 68.6 k

Answer
Answer : (a)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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