Op-Amp Block & Schematic Diagram

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Block Diagram Representation of Typical Op-Amp:

Block Diagram Representation of Typical Op-Amp 1. Input Stage: Dual i/p, Balanced o/p Diff Amplifier Provides  most voltage gain of Op-Amp  i/p resistance of Op-Amp 2.Intermediate Stage: Dual i/p, Unbalanced o/p Diff Amplifier Drives the o/p of 1 st stage Direct coupling  dc voltage well above gnd level 3. Level Translator (or) Shifting Stage: Dc voltage level to zero w.r.t gnd 4.Output Stage: Increases o/p voltage swing Raises current supply capability of Op-Amp Low Resistance

Schematic Circuit Diagram of IC 741:

Schematic Circuit Diagram of IC 741

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