Clock generator with stability during PVT variations and on-chip oscillator having the same
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United States of America Patent
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Feb 28, 2017
Grant Date -
Jul 21, 2016
app pub date -
Dec 7, 2015
filing date -
Jan 20, 2015
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Abstract
Provided is a clock generator that includes a comparator in which characteristics of two input signals vary over time. A voltage controller, having a resistor and at least one constant current source, generates a direct current (DC) voltage proportional to an output current of the constant current source and a resistance value of the resistor. The comparator compares a ramp voltage generated by the voltage controller with the DC voltage.
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