Reference buffer circuit, analog-to-digital converter system, receiver, base station and mobile device
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United States of America
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Aug 27, 2024
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N/A
app pub date -
Dec 23, 2020
filing date -
Dec 23, 2020
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Abstract
A reference buffer circuit for an analog-to-digital converter is provided. The reference buffer circuit includes a first input node configured to receive a first bias signal of a first polarity from a first signal line. Further, the reference buffer circuit includes a second input node configured to receive a second bias signal of a second polarity from a second signal line. Additionally, the reference buffer circuit includes a first output node configured to output a first reference signal of the first polarity. A first buffer amplifier is coupled between the first input node and the first output node. The reference buffer circuit includes in addition a second output node configured to output a second reference signal of the second polarity. A second buffer amplifier is coupled between the second input node and the second output node. Further, the reference buffer circuit includes a first coupling path comprising a first capacitive element. The first coupling path is coupled between the first output node and the second input node. In addition, the reference buffer circuit includes a second coupling path comprising a second capacitive element. The second coupling path is coupled between the second output node and the first input node.
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