| 摘要 |
An embodiment of the present invention provides a reference buffer circuit comprising a first reference voltage circuit to provide a first reference voltage at a first port to sink a first current at the first port; a second reference voltage circuit to provide a second reference voltage at a second port to sink a second current at the second port; and a current source circuit to source a source current at an output port, where the output port is connected to the second port. According to another embodiment of the present invention, the first and second ports are connected to a resistor ladder network of a flash analog-to-digital converter.
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