About: Operational Amplifier   Sponge Permalink

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The operational amplifier , often referred to informally as an op amp, is a circuit that provides extremely high-gain amplification of the difference in voltage between two inputs. One input is known as the inverting input (' - ' symbol) and the other is known as the non-inverting input (' + ' symbol). There is only a single output. The input impedance of the inverting and non-inverting inputs is extremely high. The output impedance of the op amp is very low. Modern op amps are integrated circuits. Not shown in this symbol are connections for the power supplies. Omitting them from schematic drawings is customary, although in practice they must be connected. Op amps are available with bipolar or unipolar power supplies.

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  • Operational Amplifier
  • Operational amplifier
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  • The operational amplifier , often referred to informally as an op amp, is a circuit that provides extremely high-gain amplification of the difference in voltage between two inputs. One input is known as the inverting input (' - ' symbol) and the other is known as the non-inverting input (' + ' symbol). There is only a single output. The input impedance of the inverting and non-inverting inputs is extremely high. The output impedance of the op amp is very low. Modern op amps are integrated circuits. Not shown in this symbol are connections for the power supplies. Omitting them from schematic drawings is customary, although in practice they must be connected. Op amps are available with bipolar or unipolar power supplies.
  • The amplifier's output can be single-ended or, less often, differential. Circuits using op-amps almost always employ negative feedback. Because the op-amp has such high gain, the behavior of the amplifier is almost completely determined by the feedback elements.
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abstract
  • The operational amplifier , often referred to informally as an op amp, is a circuit that provides extremely high-gain amplification of the difference in voltage between two inputs. One input is known as the inverting input (' - ' symbol) and the other is known as the non-inverting input (' + ' symbol). There is only a single output. The input impedance of the inverting and non-inverting inputs is extremely high. The output impedance of the op amp is very low. Modern op amps are integrated circuits. Not shown in this symbol are connections for the power supplies. Omitting them from schematic drawings is customary, although in practice they must be connected. Op amps are available with bipolar or unipolar power supplies.
  • The amplifier's output can be single-ended or, less often, differential. Circuits using op-amps almost always employ negative feedback. Because the op-amp has such high gain, the behavior of the amplifier is almost completely determined by the feedback elements.
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