Voltage divider circuit having at least two kinds of unit resistors
AssigneeSTI Semiconductor Corporation
InventorKazuhiro Tsumura
Life of this patent
Estimating the term…
Abstract
Provided is a voltage divider circuit having a small area and good accuracy of a division ratio. Among a plurality of resistors of the voltage divider circuit, each of resistors having a large resistance value, that is, resistors (1/4R, 1/2R, 1R, 9R, 10R) having high required accuracy of ratio includes first unit resistors (5A) that have a first resistance value and are connected in series or connected in parallel to each other, and each of resistors having a small resistance value, that is, resistors (1/16R, 1/8R) having low required accuracy of ratio includes second unit resistors (5B) that have a second resistance value smaller than the first resistance value and are connected in parallel to each other.
Claims20
A voltage divider circuit, comprising:
- a plurality of resistors connected in series;
- and
- a plurality of short circuit control elements respectively connected in parallel to the plurality of resistors and configured to respectively control selection or non-selection of the resistors, the plurality of resistors comprising:
- a first resistor including a first unit resistor having a first resistance value, the first resistor including one or more first unit resistors connected in series or in parallel;
- and
- a second resistor including a second unit resistor having a second resistance value, the second resistor including second unit resistors connected in parallel or in series,
- the second resistance value being smaller than the first resistance value.
A voltage divider circuit, comprising:
- a plurality of resistors connected in series and divided into groups;
- and
- fuses each connected in parallel to a respective one of the groups of said plurality of resistors, each group of said plurality of resistors comprising one or both of:
- a first resistor including a first unit resistor having a first resistance value, the first resistor including one or more first unit resistors connected in series or in parallel;
- and
- a second resistor including a second unit resistor having a second resistance value, the second resistor including second unit resistors connected in parallel or in series,
- the second resistance value being smaller than the first resistance value.
Dependencies are inferred from the claim text.