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Step 10 11.061P Refer to the Figure E11.19 the textbook Consider the Example 11. from the textbook The circuits in Example 11.9 and in Exercise 11 19 are equivalent with following considerations Since, there is the load resistor. Input impedance of MOSFET is, Gain of op-amp is, Calculate the input resistance of the amplifier. Substitute 10k for and for R, (10k)(1k) 10k Thus, the input resistance of the amplifier R, is 909.1 Step 10 Determine the open loop gain the Substitute for mA/V for for 10 for for 10k 10k Thus, the open loop gain of the amplifier A Step 3 of 10 Calculate the feedback factor Substitute 101 for R, in the equation 10x10 mA/V Thus, the feedback factor of the amplifier Step 4 of 10 Calculate the loop gain of the amplifier =3.03 Thus, the loop gain the amplifier AB 3.03 Step 10 Calculate the gain with feedback of the A Substitute 3.03 for AB and for A 1+3.03 Thus, the gain with feedback of the amplifier A, is Step 10 Calculate the output resistance of the Thus, the output resistance of the amplifier is Step 10 Calculate the input resistance with feedback of the amplifier R, 1+AB Substitute 3.03 for AB and for R, equation 909.1 1+3.03 Thus the input resistance with feedback of the amplifier is Step 8 of 10 Calculate the output resistance with feedback of the amplifier 1+AB Substitute 3.03 for AB and 6.67 for equation 1+3.03 Thus, the output resistance with feedback of the amplifier Step 10 Calculate the input resistance of the feedback amplifier. Here, (since Substitute mA/V for for for R, in equation 20k+10k 30k =33.33 Substitute 10 for 33.33 for in 10k - 33.33+1 Thus, the input resistance the feedback amplifier is Step 10 Calculation the output resistance as follows: r. 20k 909.1 10k 1+9.091 Thus, the output resistance as seen by the load, of the amplifier is