REFERENCE VOLTAGE BUFFER CIRCUIT

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United States of America Patent

SERIAL NO

15590017

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Abstract

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A reference voltage buffer circuit includes an operational amplifier, a capacitor switching module, a first transistor and a second transistor. The operational amplifier includes two input terminals and an output terminal, where the two input terminals receive an input reference voltage and a feedback voltage, respectively. A gate electrode of the first transistor is coupled to the capacitor switching module, and a source electrode of the first transistor provides the feedback voltage. A gate electrode of the second transistor is coupled to the capacitor switching module, and a source electrode of the second transistor provides an output reference voltage. In addition, the operational amplifier generates a stable control voltage to the gate electrodes of the first transistor and the second transistors via the capacitor switching module while the output terminal of the operational amplifier is not directly connect to the gate electrodes of the first transistor and the second transistors.

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Patent Owner(s)

Patent OwnerAddress
REALTEK SEMICONDUCTOR CORPNO 2 INNOVATION RD II HSINCHU SCIENCE PARK HSINCHU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yu-Chang New Taipei City, TW 42 91
Huang, Shih-Hsiung Miaoli County, TW 46 113
Lai, Jie-Fan Taichung City, TW 12 1

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