Operational Amplifiers - Saturation

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SUMMARY

The maximum output voltage of operational amplifiers (op-amps) with dual power supplies is defined by the supply voltage (VS), not the difference between the two supply voltages. This is because the output voltage cannot exceed the limits set by the op-amp's design and specifications. Users must refer to the specific op-amp datasheet to understand the output voltage range and saturation characteristics. The confusion often arises from misinterpreting the potential difference across the terminals.

PREREQUISITES
  • Understanding of operational amplifier fundamentals
  • Familiarity with dual power supply configurations
  • Knowledge of voltage output limitations in electronic components
  • Ability to read and interpret electronic component datasheets
NEXT STEPS
  • Review the datasheet of a specific op-amp model to understand its output voltage specifications
  • Study the concept of op-amp saturation and its implications in circuit design
  • Learn about the differences between ideal and real op-amp behavior
  • Explore practical applications of op-amps in signal processing circuits
USEFUL FOR

A level physics students, electronics enthusiasts, and anyone studying operational amplifier behavior in circuit design.

PFuser1232
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I am an A level physics student. I have a doubt regarding the saturation of op-amps. For a circuit with a dual power supply, each supply has an emf VS. My doubt is, why is the MAXIMUM magnitude of the output voltage VS? Shouldn't it be VS - (- VS) = 2VS? (Since the potential difference is the difference in potential between the two terminals).
 
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MohammedRady97 said:
I am an A level physics student. I have a doubt regarding the saturation of op-amps. For a circuit with a dual power supply, each supply has an emf VS. My doubt is, why is the MAXIMUM magnitude of the output voltage VS? Shouldn't it be VS - (- VS) = 2VS? (Since the potential difference is the difference in potential between the two terminals).

Please post a link to the datasheet and give us a pointer to the specification that you have the doubt about. That is the most efficient way to get your question answered. :smile:
 
As Berkeman suggests, it entirely depends on how the output voltage is defined for that specific op amp.
 

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