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US 2026/0205080 A1Published application
Operational amplifier
AssigneeRohm Co., Ltd.
InventorNaohiro NOMURA
Life of this patent
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Abstract
An input stage includes a differential pair and an active load. An output stage includes an output transistor that receives an output signal of the input stage. A phase-compensation circuit supplies a feedback current to the active load in accordance with an output voltage. An offset-cancellation circuit supplies a correction current to the active load in accordance with an input voltage of an operational amplifier.
Claims13
An operational amplifier comprising:
- an input stage having a differential pair, a tail current source, and an active load;
- an output stage including an output transistor coupled to receive an output signal of the input stage;
- a phase-compensation circuit structured to supply a feedback current to the active load in accordance with an output voltage of the operational amplifier;
- and
- an offset-cancellation circuit structured to supply a correction current to the active load in accordance with an input voltage of the operational amplifier.
2 more elements
Dependencies are inferred from the claim text.