COMPARATOR MODULE AND OSCILLATOR USING THE SAME
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United States of America Patent
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Issued Date -
Dec 14, 2023
app pub date -
Nov 2, 2022
filing date -
Jun 13, 2022
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Abstract
A comparator module for an oscillator is disclosed. The comparator module has a function provided by two independent comparators that are combined together to share the same bias current source, so that an operation current of the oscillator may be reduced, and the circuit area and power consumption may be effectively reduced. Further, compared to the conventional design that one of the two comparators compares a first voltage with a reference voltage and the other one of the two comparators compares a second voltage with the reference voltage and the time points at which the first voltage and the second voltage are a logic high level are different, three transistors of the disclosed comparator module are designed into two equivalent differential pairs and share a bias current source.
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