Q9. Find the resistance
The op-amp below is ideal except for having a finite open-loop gain A_0 and is used to realize an inverting amplifier whose gain has a nominal (desired) value G=-R_2/R_1 . To compensate for the gain reduction due to the finite gain A_0 , a resistance R_c is shunted across R_1 . Find the value for R_c which gives perfect compensation so that the setup gives gain G=-R_2/R_1 .

Question

Q9. Find the resistance 
 The op-amp below is ideal except for having a finite open-loop gain   A_0  and is used to realize an inverting amplifier whose gain has a nominal (desired) value   G=-R_2/R_1 . To compensate for the gain reduction due to the finite gain   A_0 , a resistance   R_c  is shunted across   R_1 . Find the value for   R_c   which gives perfect compensation so that the setup gives gain   G=-R_2/R_1 .

Answer

R_C = \frac{R_1(R1 + A_0R_2)}{R_1+R_2}

Answer

R_C = \frac{R_2(A_0R1 - R_2)}{A_0R_1+R_2}

Answer

R_C = \frac{R_2(R1 - A_0R_2)}{R_1+R_2}

Answer

R_C = \frac{R_2(R1 - R_2)}{R_1+A_0R_2}

Answer

R_C = \frac{R_1(A_oR1 - R_2)}{R_1+R_2}

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Q9. Find the resistance The op-amp below is ideal except for having a finite o...

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