Quadrature relaxation oscillator using frequency error compensation loop
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United States of America Patent
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May 26, 2020
Grant Date -
Oct 17, 2019
app pub date -
Nov 30, 2017
filing date -
Dec 14, 2016
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Abstract
The present invention relates to a technology capable of compensating for a frequency error in a quadrature relaxation oscillator. The quadrature relaxation oscillator generates a signal at a desired frequency by using a resistor and a capacitor which are less sensitive to a PVT (Process, Voltage, Temperature) variation, generates a signal at a desired frequency by compensating for an error from design, which is caused by a mismatch between circuits due to a characteristic of a semiconductor process, through a feedback lop, and removes noise.
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