Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_307

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Step of 4 2.041P The circuit to implement the summing function using two ideal op-amps and resistors is, R. R₁ v₁ R, V₀ Figure 1 Step 2 of 4 The output of the weighted summer circuit is, (1) = (2) The required output is, (3) Compare equations (1), (2) and (3). The output, = is possible only when Ra = and Step 3 of 4 The final output is, Consider the following relations along with Ra, R₁ and equalities to produce first part of as : =2kΩ kΩ The value of Rc also effects coefficients of So second part of is This expression is obtained under following conditions: = 3 and = = 5 and = 5R, kΩ 3 5 Step 4 of 4 Cross check these resistor values by using output voltage expression. Therefore, for a required output voltage the possible choice of resistances is, kΩ, = kΩ, and = kΩ