NOISE FILTERING CIRCUIT, D/A CONVERTER, AND ELECTRONIC DEVICE INCLUDING THE SAME
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United States of America Patent
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Issued Date -
Sep 5, 2024
app pub date -
May 14, 2024
filing date -
Dec 10, 2021
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Abstract
A noise filtering circuit, a digital to analog converter and an electronic device are provided. The noise filtering circuit comprises a first amplifier configured to receive a bias voltage at a first input terminal, receive a bias output voltage at a second input terminal though a feedback path, and compensate for a difference between the bias voltage and the bias output voltage; a first transistor connected to an output of the first amplifier and having a gate to which an off-voltage is applied; a first capacitor connected to the first transistor; a second capacitor connected to the output of the first amplifier; a second transistor connected to the second capacitor and having a gate to which an off-voltage is applied, and a second amplifier having an input terminal connected to the first capacitor and a second input terminal connected to the second transistor.
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