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Q#1
OP-AMP and its Applications
GATE EC 2001
MSQ
+2 marks
-0 marks
Assume that the OP-AMP in Figure is ideal.
(a) Obtain an expression for in terms of, R, and the reverse saturation current of the transistor.
(b) If R = 1Ω, and the thermal voltage, then what is the value of the output voltage for an input voltage ?
(c) Suppose that the transistor in the feedback path is replaced by a p-n-junction diode with a reverse saturation current of The p-side of the diode is connected to node A and the n-side to node B. Then what is the expression for in terms of, R, ?
(a)
(b)
(c)
(b)
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