Fully differential operational amplifier
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United States of America Patent
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Apr 10, 2018
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N/A
app pub date -
Oct 3, 2016
filing date -
Oct 3, 2016
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Abstract
A fully differential operational amplifier is provided. The amplifier has input nodes and includes a differential input stage for receiving input signals over the input nodes and providing output signals on first and second intermediary nodes. The amplifier includes a fully differential amplification stage having positive and negative inputs coupled to the first and second intermediary nodes, respectively. The amplifier includes a first compensation transistor having conduction terminals coupled to the first intermediary node and a first node, and a control terminal coupled to a negative output of the fully differential amplification stage. The amplifier includes a second compensation transistor having conduction terminals coupled to the second intermediary node and a second node, and a control terminal coupled to a positive output of the fully differential amplification stage. The amplifier includes positive and negative output stages for providing amplifier outputs and feeding the outputs back to the amplifier.
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