AD CONVERTER
PROBLEM TO BE SOLVED: To provide an AD converter of low power and small area suppressing the range of over range to a minimum without being limited by a relationship between a resistance value of an output resistor R1of an amplifier and a resistance value of an averaging resistance element Rave. SOL...
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| creator | TOYOMURA JUNJI INOUE YOSHIO |
| description | PROBLEM TO BE SOLVED: To provide an AD converter of low power and small area suppressing the range of over range to a minimum without being limited by a relationship between a resistance value of an output resistor R1of an amplifier and a resistance value of an averaging resistance element Rave. SOLUTION: The AD converter includes: a reference voltage generator, which generates a plurality of reference voltages by dividing a gap between a first voltage and a second voltage; a plurality of amplifiers, each of which amplifies a differential voltage between each reference voltage and a voltage of an input signal; and a plurality of averaging resistance elements, which connect output terminals of the amplifiers. Further, the AD converter includes a plurality of first averaging auxiliary circuits, each of which has: a first amplifier for amplifying a differential voltage between a third voltage higher than the first voltage and the voltage of the input signal; and a first resistance element connecting an output terminal of an amplifier, to which the first voltage has been input as a reference voltage, among the plurality of amplifiers, and an output terminal of the first amplifier. COPYRIGHT: (C)2011,JPO&INPIT |
| format | Patent |
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SOLUTION: The AD converter includes: a reference voltage generator, which generates a plurality of reference voltages by dividing a gap between a first voltage and a second voltage; a plurality of amplifiers, each of which amplifies a differential voltage between each reference voltage and a voltage of an input signal; and a plurality of averaging resistance elements, which connect output terminals of the amplifiers. Further, the AD converter includes a plurality of first averaging auxiliary circuits, each of which has: a first amplifier for amplifying a differential voltage between a third voltage higher than the first voltage and the voltage of the input signal; and a first resistance element connecting an output terminal of an amplifier, to which the first voltage has been input as a reference voltage, among the plurality of amplifiers, and an output terminal of the first amplifier. 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SOLUTION: The AD converter includes: a reference voltage generator, which generates a plurality of reference voltages by dividing a gap between a first voltage and a second voltage; a plurality of amplifiers, each of which amplifies a differential voltage between each reference voltage and a voltage of an input signal; and a plurality of averaging resistance elements, which connect output terminals of the amplifiers. Further, the AD converter includes a plurality of first averaging auxiliary circuits, each of which has: a first amplifier for amplifying a differential voltage between a third voltage higher than the first voltage and the voltage of the input signal; and a first resistance element connecting an output terminal of an amplifier, to which the first voltage has been input as a reference voltage, among the plurality of amplifiers, and an output terminal of the first amplifier. 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SOLUTION: The AD converter includes: a reference voltage generator, which generates a plurality of reference voltages by dividing a gap between a first voltage and a second voltage; a plurality of amplifiers, each of which amplifies a differential voltage between each reference voltage and a voltage of an input signal; and a plurality of averaging resistance elements, which connect output terminals of the amplifiers. Further, the AD converter includes a plurality of first averaging auxiliary circuits, each of which has: a first amplifier for amplifying a differential voltage between a third voltage higher than the first voltage and the voltage of the input signal; and a first resistance element connecting an output terminal of an amplifier, to which the first voltage has been input as a reference voltage, among the plurality of amplifiers, and an output terminal of the first amplifier. COPYRIGHT: (C)2011,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRICITY |
| title | AD CONVERTER |
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