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Externally compensated operational amplifier

LM301A Internal Circuitry

Explore the internal circuitry and functional stages of LM301A.

Package view

Inside LM301A

Compact differential, gain and output stages inside the IC.

LM301A functional internal cutaway with external compensation pins 1 and 8.
Original functional visualization, not a transistor-level die reconstruction.

Explore the circuit

Select a stage to see its role and connections

Compare the inputs

The differential stage responds to the voltage between IN+ and IN−.

Choose compensation

The external capacitor shapes loop response. The illustrated 30 pF connection is between pins 1 and 8; keep it short.

Close the feedback loop

Negative feedback makes the nominal DC gain 1 + 90 kΩ / 10 kΩ = 10. Real offset, bias current, bandwidth and loading cause error.

Component view