Oscillator with temperature compensation and electronic device using the same

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United States of America Patent

PATENT NO 12047037
APP PUB NO 20230344384A1
SERIAL NO

17981204

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Abstract

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An oscillator equipped with a temperature compensation circuit is illustrated. Through the temperature compensation circuit, a transistor of a current mirror circuit of the oscillator which outputs a reference current to a voltage matching circuit is controlled by the temperature compensation voltage. Both of the temperature compensation voltage and a reference current decrease as the temperature rises, and a delay time of the oscillation voltage is proportional to the temperature compensation voltage and inversely proportional to the reference current. Therefore, the effects of temperature on the delay time just cancel each other out. The delay time of the oscillating voltage is related to the frequency of the clock signal. Therefore, if the delay time of the oscillating voltage is not affected by temperature, the frequency of the clock signal will not be affected by temperature.

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Patent Owner(s)

Patent OwnerAddress
NUVOTON TECHNOLOGY CORPORATIONNO 4 CREATION RD III HSINCHU SCIENCE PARK

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lai, Ping-Wen Zhubei, TW 5 2
Li, Cheng-Tao Zhubei, TW 19 111

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