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US 2019/0199304 A1Published application
Operational amplifier
AssigneeRohm Co., Ltd.
InventorsNaohiro Nomura, Takatoshi Manabe
Life of this patent
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Abstract
An operational amplifier includes a gain boost circuit. The gain boost circuit includes a first differential gm amplifier of a first stage, and a second differential gm amplifier of a post stage. Phase compensation capacitors are provided between inputs and outputs of a system of the second differential gm amplifier.
Claims8
An operational amplifier comprising a gain boost circuit, wherein
- the gain boost circuit includes:
- a first differential conductance amplifier of a first stage;
- a second differential conductance amplifier of a post stage, including two pairs of input and output ports;
- and
- two phase compensation capacitors, each provided between the input and the output ports of respective one of the two pairs of the second differential conductance amplifier.
2 more elements
Dependencies are inferred from the claim text.