Chapter 9, Problem 9.3EP

(a) An inverting op-amp circuit is to be designed using an op-amp with afinite differential voltage gain of $A_{od}={10}^4$ . The closed-loop voltage gain is to be $A_v=-15.0$ and the input resistance is to be $R=25k\Omega$ . What is the requiredvalue of $R_2$ ? (b) Using the results of part (a), what is the closed-loop voltage gainif (i) $A_{od}={10}^5$ and (ii) $A_{od}={10}^3$ ? (Ans. (a) $R_1=25k\Omega ,R_2=375.6k\Omega$ ;(b) (i) $A_v=-15.0216$ , (ii) $A_v=-14.787$ )