Chegg Solutions for Microelectronic Circuits (Adel S Sedra, Kenneth C Smith) (Z-Library)_parte_330

Prévia do material em texto

Step of 5 2.064P Refer to Figure 2. 16 in the textbook for a differential amplifier. Connect a resistance, R, in series with each of the inputs, and Draw the modified circuit. R₁ R, - R, + + - - - Figure 1 Step of 5 Apply super position principle on the circuit Assume the voltage source, =0 to find the expression for the inverting gain. Due to virtual ground concept, the voltages at inverting and on-inverting terminals are same. Hence, Therefore, Assume the voltage source, Vn =0 to find the expression for the non-inverting gain. Due to virtual ground concept, the voltages at inverting and non-inverting terminals are same. Hence, Therefore, Step of 5 The voltage at non-inverting terminal due to voltage division is, Therefore, 1 Step of Consider that the circuit is an ideal differential amplifier. Therefore, Combine the two configuration gains together. = Step of 5 Simplify the function further. Consider that Therefore, R, R₁ since, Therefore, the condition for the ideal differential amplifier is,