Chapter 9, Problem 9.3TYU

Consider an inverting op-amp circuit as shown in Figure 9.13 with $R_1=20k\Omega$ and $R_2=200k\Omega$ . The op-amp is ideal except the open-loop gain is $A_{od}={10}^4$ .Determine (a) $v_1$ and $v_o$ when $v_I=50mV$ , (b) $v_1$ and $v_I$ when $v_o=5V$ , and (c) $v_I$ and $v_o$ when $v_1=0.20mV$ . (Ans. (a) $v_o=-0.49945V,v_1=+49.945\mu V$ ;(b) $v_1=-0.50055V,v_1=-0.5mV$ ; (c) $v_0=-2.0V,v_1=0.20022V$ )