(a) Find Ad and Acm for the difference amplifier circuit
Chapter 2, Problem 2.68(choose chapter or problem)
(a) Find Ad and Acm for the difference amplifier circuit shown in Fig. P2.68. (b) If the op amp is specified to operate properly as long as the common-mode voltage at its positive and negative inputs falls in the range 2.5 V, what is the corresponding limitation on the range of the input common-mode signal vIcm? (This is known as the common-mode range of the differential amplifier.) (c) The circuit is modified by connecting a 10-k resistor between node A and ground, and another 10-k resistor between node B and ground. What will now be the values of Ad, Acm, and the input common-mode range?
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