To determine the maximum closed-loop voltage gain for the given op-amp, we first need to understand the relationship between the slew rate and the maximum rate of change of the output voltage.
The slew rate \( \text{SR} \) of an operational amplifier is defined as the maximum rate of change of the output voltage per unit time, typically expressed in \(\text{V}/\mu\text{s}\). The formula for the slew rate is given by:
\(\text{SR} = \frac{\Delta V_{\text{out}}}{\Delta t}\)
In the question, the slew rate \( \text{SR} \) is provided as \(4 \text{ V}/\mu\text{s}\). The change in input voltage \( \Delta V_{\text{in}} \) is given as \(0.1 \text{ V}\) over a time interval \( \Delta t \) of \(10 \, \mu\text{s}\).
We are tasked with finding the maximum closed-loop voltage gain \( A_v \). The voltage gain affects how the input voltage change is amplified at the output. Therefore,
\(\Delta V_{\text{out}} = A_v \times \Delta V_{\text{in}}\)
Substituting the known values into the slew rate formula, we have:
\(4 = \frac{A_v \times 0.1}{10}\)
Solving for the voltage gain \( A_v \):
\(4 = \frac{A_v \times 0.1}{10} \\[5pt] A_v = \frac{4 \times 10}{0.1} \\[5pt] A_v = 400\)
The maximum closed-loop voltage gain that can be used under the given conditions is therefore 400.
Similar Questions
- Calculate the output voltage of an op-amp for input voltages of $V_{i1} = 150 \mu\text{V}$ and $V_{i2} = 140 \mu\text{V}$. The amplifier has a differential gain of $A_d = 4000$ and the value of CMRR is $100$ :
For the series diode configuration of the given figure, determine $V_D$ and $I_D$.
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Reason (R) : The device is therefore called an insulated gate field-effect transistor (IGFET).
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
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Reason (R) : Increasing $V_{\text{SB}}$ raises the surface potential and therefore reduces the barrier for inversion.
In the light of the above statements, choose the most appropriate answer from the options given below : - Sequence for standard n-well fabrication process is :
A. Passivation
B. n-well implant
C. Metallization
D. Source/drain diffusion
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- The sequence of physical events when forward bias is applied to PN junction:
A. Barrier potential reduces
B. Majority carriers injected across junction
C. Recombination in neutral regions increases
D. Diffusion current established across quasi-neutral regions
E. Net forward current increases
Choose the correct answer from the options given below : - In an op-amp which of the following parameters depend on frequency.
A. Voltage gain
B. Noise current
C. CMRR
D. Output voltage swing
E. Gain bandwidth product
Choose the correct answer from the options given below : - Which of the following statements are correct:
A. A negative feedback can increase linearity and reduce distortion.
B. Positive feedback always improves stability of the amplifier.
C. Series-shunt (Voltage) negative feedback tends to reduce output impedance.
D. Closed-loop bandwidth typically increased when negative feedback is applied.
Choose the correct answer from the options given below :
Important Questions from Miscellaneous
- Which of the following scheduler/schedulers is/are also called CPU scheduler ?
(A). Short Term Scheduler
(B). Long Term Scheduler
(C). Medium Term Scheduler
(D). Asymmetric Scheduler
Choose the correct answer from the options given below: - A situation where two or more processes are blocked, waiting for resources held by each other is called:
- External fragmentation occurs ________.
- Which disk scheduling algorithm looks for the track closest to the current head position?
- Which CPU scheduling algorithm prefers the process with the shortest burst time?
