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US 2019/0356269 A1Published application
Oscillator circuits capable of compensating for pvt variations
AssigneeWinbond Electronics Corp.
InventorTzu-Hsiang WENG
Life of this patent
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Abstract
An oscillator circuit includes a signal generating circuit and a reference voltage generating circuit. The signal generating circuit is configured to receive a reference voltage and generate an output signal according to a comparison result of the reference voltage and a feedback voltage. The feedback voltage is pre-charged to a level of a system high voltage. The reference voltage generating circuit is coupled to the signal generating circuit and configured to generate the reference voltage.
Claims14
An oscillator circuit, comprising:
- a signal generating circuit, configured to receive a reference voltage and generate an output signal according to a comparison result of the reference voltage and a feedback voltage, wherein the feedback voltage is pre-charged to a level of a system high voltage;
- and
- a reference voltage generating circuit, coupled to the signal generating circuit and configured to generate the reference voltage.
An oscillator circuit, comprising:
- a signal generating circuit, configured to receive a reference voltage and generate an output signal according to a comparison result of the reference voltage and a feedback voltage, wherein the signal generating circuit comprises a capacitor, the capacitor is repeatedly charged or discharged in response to a level of the output signal so as to generate the feedback voltage at a terminal;
- and
- a reference voltage generating circuit, coupled to the signal generating circuit and configured to generate the reference voltage, wherein a level of the feedback voltage is repeatedly changed between the level of the system high voltage and a level of the reference voltage.
Dependencies are inferred from the claim text.