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. 26, 2026
Filed:
May. 03, 2024
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
John P. Lesso, Edinburgh, GB;
Michael Robinson, Edinburgh, GB;
Cirrus Logic Inc., Austin, TX (US);
Abstract
This application relates to methods and apparatus for outputting a modulated signal for driving a switching output stage. A modulator circuit includes a digital modulator that receives an input signal modified by a correction signal and outputs the modulated signal. A feedback node receives a feedback signal of the output of the switching output stage and a first filter receives and filters an inverted version of the modulated signal to generate a reference signal, such that the reference signal has gain and phase matching to the feedback signal. The reference signal and the feedback signal are both applied to a summation node to generate an analog correction signal which is input to an ADC. An error loop filter is configured to filter the ADC output to generate the digital correction signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile