Difference between revisions of "EEHDSGN Real Operational Amplifier Circuits"
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Single vs dual power supply rails | Single vs dual power supply rails | ||
Distortion / Nonlinearity | |||
Gain | |||
Feedback | |||
=== Basic Op Amp Circuits === | === Basic Op Amp Circuits === | ||
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Instability | Instability | ||
Common-mode | |||
Offset | |||
=== Preventing op amp oscillation === | === Preventing op amp oscillation === | ||
Revision as of 15:50, 19 February 2022
Introduction
Basic operational amplifier (op amp) circuits are covered to death elsewhere. What is commonly not discussed, however, is that real-world (industrial, rugged) op amp circuits are NOT the basic ones commonly shown everywhere.
Real-World Op Amp Circuit Considerations
Real-world considerations (for an op amp in an industrial / commercial product) include the following:
- Provisions to prevent op amp from oscillation.
- Provisions to include filtering on op am input.
- Provisions to balance op amp input impedances, especially when filtering is employed.
- Picking an appropriate op amp IC type for the project at hand.
- And many others.
Requisite Concepts
Input/output impedance
Single vs dual power supply rails
Distortion / Nonlinearity
Gain
Feedback
Basic Op Amp Circuits
It would be useful to start from basic circuits, and immediately observe issues with them:
TODO inverting
TODO its parameters
TODO non-inverting
TODO its parameters
TODO differential
TODO its parameters
Non-ideal op amp behaviors
Saturation
Operation close to rails
Nonlinearities
Bandwidth
Instability
Common-mode
Offset
Preventing op amp oscillation
Adding filtering to op amp circuit
Impedance Balancing
Op amp features
Rail-to-rail input and/or output
Single-supply operation
