Operational Amplifiers (Op-Amps) and Their Design
15 sections
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Sections
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What we have learnt
- Operational amplifiers utilize differential amplifiers to amplify the difference between input signals.
- Key performance metrics of Op-Amps include differential gain, common-mode gain, and CMRR.
- Frequency compensation techniques are crucial for maintaining stability in operational amplifiers.
Key Concepts
- -- Differential Amplifier
- A circuit that amplifies the difference between two input signals while rejecting any signals common to both.
- -- Common Mode Rejection Ratio (CMRR)
- A measure of how well an amplifier rejects common-mode signals compared to differential signals. It is a critical parameter for assessing amplifier performance.
- -- Transconductance (gm)
- The ratio of the change in output current to the change in input voltage, representing the sensitivity of a device (typically a transistor) to input signal variations.
- -- Frequency Compensation
- Techniques employed to stabilize amplifiers, particularly high-gain devices, against oscillations when negative feedback is applied.
Additional Learning Materials
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