Temperature compensated oscillation controller and temperature compensated crystal oscillator including the same
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United States of America Patent
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Nov 19, 2019
Grant Date -
Jul 12, 2018
app pub date -
Nov 3, 2017
filing date -
Jan 10, 2017
priority date (Note) -
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Abstract
A temperature compensated oscillation controller includes a temperature compensation circuit configured to provide a reference voltage through a first terminal and to receive an input voltage including temperature information through a second terminal, and an oscillation circuit configured to be connected to an external crystal resonator through third and fourth terminals and to output a clock signal in response to an oscillation signal from the external crystal resonator. The temperature compensation circuit is configured to perform a voltage controlled oscillator-based sensing operation to convert the input voltage into a temperature code and to adjust a frequency of the clock signal using the temperature code.
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