Skip to datasheet
Dual operational amplifier

LM358 Internal Circuitry

Explore the internal circuitry and functional stages of LM358.

Package view

Inside LM358

Two amplifiers, a shared supply and a controlled feedback path.

LM358 functional channels and a conceptual input, gain, compensation and output signal path.
Functional explanation of the classic LM358; not a transistor-level die schematic.

Explore the circuit

Select a stage to see its role and connections

Two separate channels

Channel A uses pins 1, 2 and 3. Channel B uses pins 5, 6 and 7. Their outputs are independent.

Shared supply

Pins 8 and 4 power both channels. Decouple the supply close to the package.

Feedback makes gain useful

External feedback controls the relationship between input and output. Compensation helps stability, while output swing and speed remain finite.

Component view