Operational amplifier, load driving apparatus and grayscale voltage generating circuit
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United States of America Patent
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Apr 14, 2020
Grant Date -
Jan 4, 2018
app pub date -
Sep 18, 2017
filing date -
Sep 19, 2012
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Abstract
An operational amplifier applicable to a display device is provided. The operational amplifier having multiple output stages. The operational amplifier includes an input stage, an output stage selection module and a plurality of output stages. The output stage selection module is coupled to the input stage. Each of the output stages is coupled to the output stage selection module and is coupleable to drive a corresponding one of a plurality of loads. The output stage selection module is configured to selectively couple or discouple each of the output stages respectively to the input stage according to a plurality of selection signal. Furthermore, a load driving apparatus and a grayscale voltage generating circuit are also provided.
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