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Operational Amplifiers Basics
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In an inverting amplifier configuration using an operational amplifier, how does the slew rate affect the output signal when the input signal frequency is increased?

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Choose the Best Answer

A

The output signal will remain unchanged regardless of the frequency.

B

The output signal will start to distort at higher frequencies if the slew rate is exceeded.

C

The slew rate determines the gain of the amplifier.

D

The output signal will increase linearly with the frequency.

Understanding the Answer

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Answer

When the input frequency rises, the voltage at the inverting input changes more quickly, forcing the op‑amp to produce a faster output swing to keep the virtual short. The slew rate limits how fast the output voltage can change, measured in volts per microsecond. If the required rate exceeds the slew rate, the output lags, its peaks flatten, and the waveform becomes distorted or clipped. For example, a 10 Vpp sine at 1 MHz requires a change of 10 V in 0. 5 µs, which needs a 20 V/µs slew rate; an op‑amp rated at 5 V/µs will distort that signal, whereas a 50 V/µs device will follow it accurately.

Detailed Explanation

The slew rate limits how fast the amplifier can change its output voltage. Other options are incorrect because Some think the output never changes with frequency; People sometimes think slew rate sets the amplifier’s gain.

Key Concepts

operational amplifier
inverting amplifier
slew rate
Topic

Operational Amplifiers Basics

Difficulty

hard level question

Cognitive Level

understand

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What is the significance of the slew rate in a voltage follower configuration of an operational amplifier?

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In an inverting amplifier configuration using an operational amplifier, how does the slew rate affect the output signal when the input signal frequency is increased?

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In an inverting amplifier configuration using an operational amplifier, how does the slew rate affect the output signal when the input signal frequency is increased?

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Which of the following statements correctly describes the relationship between input impedance, slew rate, and power supply rejection ratio (PSRR) in operational amplifiers (op-amps)?

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