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An Op-Amp has at least 5 pins :
V+ is the non-inverting input
V- is the inverting input.
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Picture of the op-amp.
This integrated circuit has 2 op-amps.
2 pins are used for the power-supply voltage.
Each op-amp uses 3 pins for V+, V- and Vs.
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Usually, in order to simplify the diagrams, the power supply is not represented.
Indeed, the following two diagrams are used to represent the op-amp.
In the followings, either diagram will be used interchangeably.
