Concept explainers
Design an ideal inverting op-amp circuit such that the voltage gain is
(a)
The value of the resistance
Answer to Problem 9.1EP
Thevalue of the resistance
Explanation of Solution
Calculation:
The given diagram is shown in Figure 1
The above op-amp is considered to be ideal.
The value of the voltage
The expression for the input voltage is given by,
Substitute
Apply KCL at negative terminal.
Substitute
The expression for the value of the voltage gain is given by,
The expression for the value of the current
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
The expression for the maximum value of the current is given by,
The expression for the maximum current is given by,
Substitute
The expression for the minimum value of the resistance
Substitute
The expression for the minimum value of the resistance
Substitute
Conclusion:
Therefore, the value of the resistance
(b)
The value for the range of the output voltage
Answer to Problem 9.1EP
The range of the output voltage is
Explanation of Solution
Calculation:
The expression for the variation of the output voltage is given by,
From above the variation of the voltage is given by,
Conclusion:
Therefore, the range of the output voltage is
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