Circuit device and oscillator

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12244268
APP PUB NO 20230275546A1
SERIAL NO

18114322

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Abstract

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A circuit device includes an oscillation circuit configured to generate an oscillation signal and a temperature compensation circuit configured to perform temperature compensation for an oscillation frequency of the oscillation signal. The temperature compensation circuit includes a first reference current generation circuit configured to generate a first reference current, a second reference current generation circuit configured to generate a second reference current, a first compensation circuit configured to perform temperature compensation for the oscillation frequency in a first temperature range based on the first reference current, and a second compensation circuit configured to perform temperature compensation for the oscillation frequency in a second temperature range, which is higher than the first temperature range in temperature, based on the second reference current. The first reference current generation circuit reduces the first reference current as a temperature rises, or the second reference current generation circuit reduces the second reference current as the temperature drops.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nomiya, Takashi Matsumoto, JP 15 22
Sawada, Mitsuaki Fujimi, JP 20 88

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