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Which of the following characteristics is NOT desirable for the ideal op-amp?
- a)Infinity voltage gain
- b)zero slew rate
- c)zero off-set voltage
- d)Infinite Input impedance
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which of the following characteristics is NOT desirable for the ideal ...
Operational Amplifier (OP-AMP):
- OP-AMP is a two terminal device whose output is either +Vs or -Vs.
- + terminal is non-inverting terminal and - terminal is inverting terminal.
- When the voltage at inverting terminal is greater than the non-inverting terminal, the output is -Vs.
- When the voltage at non-inverting terminal is greater than the inverting terminal, the output is +Vs.
Characteristics of an ideal OP-AMP:
- Infinite input resistance
- Zero output resistance
- Infinite voltage gain
- Infinite slew rate
- Zero off-set voltage
- Infinite CMRR
Most Upvoted Answer
Which of the following characteristics is NOT desirable for the ideal ...
Characteristics of an Ideal Op-Amp
An operational amplifier (op-amp) is a fundamental component in electronic circuits. The ideal op-amp is characterized by several key features that define its operation.
Desirable Characteristics
- Infinity Voltage Gain: An ideal op-amp should amplify any input signal without limitation, providing infinite open-loop gain.
- Zero Off-Set Voltage: The output should be zero when the input is zero, meaning there is no offset voltage. This ensures accuracy in amplification.
- Infinite Input Impedance: This characteristic implies that the op-amp does not draw any current from the input signal source, allowing for maximum signal fidelity.
Undesirable Characteristic
- Zero Slew Rate: This is the key characteristic that is NOT desirable for an ideal op-amp. The slew rate refers to the maximum rate at which the output can change in response to a sudden change in input. If the slew rate were zero, it would mean the output cannot respond to changes in input at all. This would severely limit the op-amp’s performance, especially in high-frequency applications where signals change rapidly.
Conclusion
In summary, while infinite voltage gain, zero off-set voltage, and infinite input impedance are essential for an ideal op-amp, a zero slew rate is not only undesirable but also impractical, as it would hinder the op-amp’s ability to operate effectively in real-world applications.
An operational amplifier (op-amp) is a fundamental component in electronic circuits. The ideal op-amp is characterized by several key features that define its operation.
Desirable Characteristics
- Infinity Voltage Gain: An ideal op-amp should amplify any input signal without limitation, providing infinite open-loop gain.
- Zero Off-Set Voltage: The output should be zero when the input is zero, meaning there is no offset voltage. This ensures accuracy in amplification.
- Infinite Input Impedance: This characteristic implies that the op-amp does not draw any current from the input signal source, allowing for maximum signal fidelity.
Undesirable Characteristic
- Zero Slew Rate: This is the key characteristic that is NOT desirable for an ideal op-amp. The slew rate refers to the maximum rate at which the output can change in response to a sudden change in input. If the slew rate were zero, it would mean the output cannot respond to changes in input at all. This would severely limit the op-amp’s performance, especially in high-frequency applications where signals change rapidly.
Conclusion
In summary, while infinite voltage gain, zero off-set voltage, and infinite input impedance are essential for an ideal op-amp, a zero slew rate is not only undesirable but also impractical, as it would hinder the op-amp’s ability to operate effectively in real-world applications.
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Which of the following characteristics is NOT desirable for the ideal ...
Operational Amplifier (OP-AMP):
- OP-AMP is a two terminal device whose output is either +Vs or -Vs.
- + terminal is non-inverting terminal and - terminal is inverting terminal.
- When the voltage at inverting terminal is greater than the non-inverting terminal, the output is -Vs.
- When the voltage at non-inverting terminal is greater than the inverting terminal, the output is +Vs.
Characteristics of an ideal OP-AMP:
- Infinite input resistance
- Zero output resistance
- Infinite voltage gain
- Infinite slew rate
- Zero off-set voltage
- Infinite CMRR
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