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:
Aug. 23, 2022
Filed:
Mar. 23, 2020
Qualcomm Incorporated, San Diego, CA (US);
Pradeep Silva, San Diego, CA (US);
Ramkumar Sivakumar, San Diego, CA (US);
Qubo Zhou, San Diego, CA (US);
Xinwang Zhang, San Diego, CA (US);
Hanil Lee, San Diego, CA (US);
Dongyang Tang, San Diego, CA (US);
Vijayakumar Dhanasekaran, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A power amplifier provides reduction of click and pop in audio applications. The power amplifier includes a first amplifier and an auxiliary amplifier. The auxiliary amplifier is used to ramp the power amplifier output from ground to an offset voltage to reduce the 'click and pop' sound. The first amplifier and the auxiliary amplifier having a shared feedback loop. An output of the first amplifier and an output of the auxiliary amplifier may be switchably coupled to the shared feedback loop. A wave generator controls a switch to couple the first amplifier output or the auxiliary amplifier output to the shared feedback loop.