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2 – Op Amp: Schematic Symbol

Operational Amplifier, like any electric or electronic component, can be represented in diagrams by a schematic symbol.

There are more than one schematic symbol and this happens because sometimes it is not necessary to outline all the connections of an Operational Amplifier.

We see the 3 main used symbols.

The first is the simplest:







As you see Operational Amplifier has two input pins and one output pin.

V+ pin is called non-inverting input pin and the V- pin is called inverting input  (we'll explain soon the meaning of these names).