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:
Jan. 07, 2020
Filed:
Oct. 12, 2018
Realtek Semiconductor Corp., Hsinchu, TW;
Jie-Fan Lai, Hsinchu, TW;
Chih-Lung Chen, Hsinchu County, TW;
Shih-Hsiung Huang, Miaoli County, TW;
Chien-Ming Wu, Hsinchu County, TW;
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Abstract
An operational amplifier includes: a first gain stage for generating a second signal based on a first signal transmitted from a prior stage circuit; a second gain stage for generating an output signal based on the second signal; multiple candidate capacitors; and a capacitor selection circuit for switching the coupling relationship of the multiple candidate capacitors based on the magnitude of an input signal of the prior stage circuit, so that only a portion of the multiple candidate capacitors could be coupled to the second gain stage at a time.