Voltage divider, constant voltage circuit using same, and trimming method in the voltage divider circuit
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United States of America Patent
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Nov 12, 2013
Grant Date -
Dec 3, 2009
app pub date -
Feb 21, 2007
filing date -
Mar 3, 2006
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Abstract
A voltage divider circuit generating a divided voltage by dividing an input voltage with a predetermined voltage division ratio, and outputting the divided voltage is disclosed. The voltage divider circuit includes a first resistor circuit including multiple resistors connected in series, the resistors being connected in parallel to corresponding fuses; and a second resistor circuit including multiple resistors connected in series, the resistors being connected in parallel to corresponding fuses, the second resistor circuit being connected in series to the first resistor circuit. The divided voltage is output from the connection of the first resistor circuit and the second resistor circuit, and the fuses of the first resistor circuit and the second resistor circuit are subjected to trimming so that the combined resistance of the first resistor circuit and the second resistor circuit is constant.
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