Chapter 5, Problem 1P

a.

To determine

Label the five terminals in the operational amplifier.

Explanation of Solution

Given data:

Refer to the given op amp circuit.

Discussion:

The five terminals of the op amp are labeled and it is shown in Figure 1.

Conclusion:

Thus, the five terminals in the operational amplifier are labeled.

b.

To determine

Mention the parameter that constraints the value of $i_n$ and also mention the value of $i_n$.

Answer to Problem 1P

The input resistance of the op amp constraints the value of $i_n$ and the value of $i_n$ is $0\text{A}$.

Explanation of Solution

Discussion:

The input resistance of an ideal op amp is infinite, which restricts the current $i_n$ to enter into op amp. Therefore, the value of input current is 0.

Conclusion:

Thus, the input resistance of the op amp constraints the value of $i_n$ and the value of $i_n$ is $0\text{A}$.

c.

To determine

Mention the parameter that constraints the value of $\left(v_p-v_n\right)$ and also mention the value of $\left(v_p-v_n\right)$.

Answer to Problem 1P

The open loop voltage gain of the op amp constraints the value of $\left(v_p-v_n\right)$ and the value of $\left(v_p-v_n\right)$ is $0\text{V}$.

Explanation of Solution

Discussion:

The open loop voltage gain of an ideal op amp is infinite, which constraints the difference between the voltage appear across the inverting and non-inverting terminal of the op amp to 0 V. Therefore, $v_p-v_n=0\text{V}$.

Conclusion:

Thus, the open loop voltage gain of the op amp constraints the value of $\left(v_p-v_n\right)$ and the value of $\left(v_p-v_n\right)$ is $0\text{V}$.

d.

To determine

Find the value of voltage $v_o$ in the given circuit using PSpice.

Answer to Problem 1P

The value of voltage $v_o$ in the given circuit is $-10\text{V}$.

Explanation of Solution

PSpice design:

Draw the given circuit in PSPICE as shown in Figure 2.

Provide the simulation settings as shown in Figure 3 to obtain output parameters.

After simulating the PSPICE circuit, the output voltage $v_o$ is shown in Figure 4.

From Figure 4, the output voltage $v_o=-10\text{V}$.

Conclusion:

Thus, the value of voltage $v_o$ in the given circuit is $-10\text{V}$.