The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Dec. 18, 2023
Nuvoton Technology Corporation, Hsinchu, TW;
Cheng-Tao Li, Zhubei, TW;
Ping-Wen Lai, Zhubei, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
An oscillation circuit includes: a current mirror circuit outputting a reference current; a charging and discharging circuit charging a first charge storage element by using one of the reference currents or discharging the first charge storage element, to generate a first control voltage; an output stage circuit including a first switch transistor controlled by the first control voltage to output a first oscillation signal; a first resistor; a second resistor; and a diode circuit. The first resistor and the second resistor have same directional temperature drifts, a first resistance of the first resistor is greater than a second resistance of the second resistor, and a first resistance drift of the first resistor with a temperature variation is smaller than a second resistance drift of the second resistor with the temperature variation, such that the effect of the temperature variation on a frequency accuracy is reduced.