| 摘要 |
PROBLEM TO BE SOLVED: To a voltage divider circuit for dividing an input voltage in accordance with a predetermined ratio with high accuracy, in which a source current does not flow from a voltage source and a sink current does not flow into the voltage source. SOLUTION: The voltage divider circuit includes: a constant current circuit for outputting a current flowing through a first resistor in accordance with to an input voltage as a constant current; a first current mirror circuit, in which the constant current becomes an input current, for outputting a first output current; a second current mirror circuit, in which the first output current becomes an input current, for outputting a second output current; and a second resistor connected to an output terminal to which the second output current of the second current mirror circuit is output, wherein a divided voltage, which is a potential difference between both ends of the second resistor, is adjusted by a current mirror ratio between the first current mirror circuit and the second current mirror circuit, and a resistance ratio between the second resistor and the first resistor. COPYRIGHT: (C)2010,JPO&INPIT
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