(a) Design an inverting summing amplifier that will produce an output voltage of υ0 = −3(υI 1 + 2υI 2 + 0.3υI3 + 4 υI4). The maximum resistance is to be limited to 400 kΩ. (b) Using the results of part (a), determine v0 for (i) υI 1 = 0.1 V, υI 2 = −0.2 V, υI 3 = −1 V, υI 4 = 0.05 V; and for (ii) υI 1 = − 0.2 V, υI 2 = 0.3 V, υI3 =1.5 V, υI4 =−0.1 V.
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