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Examples ofoperational amplifier
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It can be made from anoperationalamplifierwith an input voltage at its positive input (see circuit diagram).
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This example is from Wikipedia and may be reused under a CC BY-SA license.This may be done with anoperationalamplifier, as shown below, or with a discrete circuit.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The magnitude of the output voltage is a property of theoperationalamplifierand its power supply.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The following analysis is based on the assumption that theoperationalamplifieris ideal.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The transimpedance amplifier presents a low impedance to the photodiode and isolates it from the output voltage of theoperationalamplifier.
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This example is from Wikipedia and may be reused under a CC BY-SA license.It equals the actual threshold of the diode, divided by the gain of theoperationalamplifier.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Anoperationalamplifiercan be described as a voltage source dependent on the differential input voltage between its input terminals.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The company developed the first commercial solid-stateoperationalamplifierand led the world in high-precision data conversion technology.
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This example is from Wikipedia and may be reused under a CC BY-SA license.However, the differential input stage of anoperationalamplifieris never perfect, leading to the amplification of these common voltages to some degree.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Ideally theoperationalamplifierdraws no current from the resistor divider.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Current mirrors are frequently used in the signal path of an integrated circuit, for example, for differential to single-ended signal conversion within anoperationalamplifier.
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This example is from Wikipedia and may be reused under a CC BY-SA license.When the input is positive, it is amplified by theoperationalamplifierwhich switches the diode on.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Anoperationalamplifiermeasures the difference, and generates an error signal.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Simply connect the resistor between the output and the inverting input of theoperationalamplifierand connect the non-inverting input to ground.
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This example is from Wikipedia and may be reused under a CC BY-SA license.For voltage mode devices, each block usually contains anoperationalamplifierin combination with programmable configuration of passive components.
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This example is from Wikipedia and may be reused under a CC BY-SA license.If a noninverting low-pass filter is required, the output can be taken at the output of the secondoperationalamplifier.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The manufacturer data sheet for theoperationalamplifiermay provide guidance for the selection of components in external compensation networks.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Since anoperationalamplifierhas very high open-loop gain, the potential difference between its inputs tend to zero when a feedback network is implemented.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The potentials at theoperationalamplifierinputs remain virtually constant (near ground) in the inverting configuration.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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