Which of the following is an Operational amplifier?
IC 741
Operational Amplifier Identification
The question asks to identify which integrated circuit (IC) from the given options is an Operational Amplifier (Op-amp). Let's analyze each option to understand their functions.
Understanding Operational Amplifiers (Op-amps)
An Operational Amplifier, commonly known as an Op-amp, is a high-gain electronic voltage amplifier with a differential input and typically a single-ended output. It's a fundamental building block in analog electronic circuits, used for amplification, filtering, signal conditioning, and many other functions. Op-amps are usually represented by an IC package.
Analyzing the IC Options
We need to determine the primary function of each listed IC:
- IC 8085: This is an Intel 8085 microprocessor. Microprocessors are the central processing units (CPUs) of computers, responsible for executing instructions. It is not an operational amplifier.
- IC 7805: This is a voltage regulator IC. Specifically, the 7805 is a popular member of the 78xx series of three-terminal positive voltage regulators. It provides a fixed output voltage of +5V. It is not an operational amplifier.
- IC 741: The 741 (or LM741) is a very famous and widely used general-purpose operational amplifier IC. It was one of the first integrated circuit op-amps and remains a common component in educational settings and simple analog circuits. This matches the definition of an operational amplifier.
- IC 555: The 555 timer IC is an extremely versatile timer/oscillator IC. It is used in a wide variety of timer applications, including creating time delays, generating pulses, and oscillation. It is not primarily an operational amplifier, although it contains internal comparator and amplifier stages.
Comparison of IC Functions
The table below summarizes the function of each IC mentioned:
| IC Number | Primary Function |
|---|---|
| IC 8085 | Microprocessor |
| IC 7805 | Voltage Regulator (+5V) |
| IC 741 | Operational Amplifier |
| IC 555 | Timer / Oscillator |
Conclusion on Operational Amplifier Identification
Based on the analysis, the IC 741 is the integrated circuit specifically designed and commonly known as a general-purpose operational amplifier among the given choices.
Similar Questions
The Common Mode Rejection Ratio (CMRR) of an ideal OP-Amp is ________.
If the input resistor of an inverting amplifier using OP-AMP is doubled and the feedback resistor remains the same, what happens to the magnitude of voltage gain?
When analyzing a closed-loop circuit containing an ideal operational amplifier, what assumption must be applied regarding the currents entering the inverting and non-inverting input pins?
In the circuit of an Op-Amp as an integrator, the feedback circuit mainly contains a ______.
To convert an op-amp integrator into a practical integrator (avoiding low-frequency saturation), which component is typically added in parallel with the feedback capacitor?
What happens to the gain of a non-inverting amplifier using OP-AMP if the feedback resistor value is increased by 5 % while keeping the input resistor constant? (Assuming the OP-AMP remains in linear range for operation.)
- In an operational amplifier integrator circuit, which component acts as feedback between the output and the input?
Which operational amplifier configuration is commonly used in zero crossing detectors?
Important Questions from Operational Amplifiers
An instrumentation amplifier has a high
An OP-Amp is designed to amplify:
The Common Mode Rejection Ratio (CMRR) of an ideal OP-Amp is ________.
If the input resistor of an inverting amplifier using OP-AMP is doubled and the feedback resistor remains the same, what happens to the magnitude of voltage gain?
Which among the following is incorrect characteristics of an ideal opamp?
