Patent ID: 8581657
Filing Date: 2013-11-12
Classification: G05F

Abstract:
1. A voltage divider circuit generating a divided voltage by dividing an input voltage with a predetermined voltage division ratio, and outputting the divided voltage, the voltage divider circuit comprising: a first resistor circuit including at least first, second and third resistors and at least first, second and third fuses, all of the resistors included in the first resistor circuit being connected in series and being connected in parallel to corresponding fuses, and all of the fuses being connected in series, and wherein resistances of the first, second and third resistors are K, 2K and 4K, respectively; a second resistor circuit including at least first, second and third resistors and at least first, second and third fuses, all of the resistors included in the second resistor circuit being connected in series and being connected in parallel to corresponding fuses, and all of the fuses being connected in series, a resistor of the second resistor circuit being directly connected in series to a resistor of the first resistor circuit, and wherein resistances of the first, second and third resistors of the second resistor circuit are K, 2K and 4K, respectively; and a divided voltage output line that outputs the divided voltage from a 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 a combined resistance of the first resistor circuit and the second resistor circuit is K×(2 wherein the first resistor circuit and the second resistor circuit have a same circuit configuration, and the resistors of the first resistor circuit and the resistors of the second resistor circuit have respective resistances thereof weighted according to a binary code.