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:
Dec. 31, 2019
Filed:
Apr. 15, 2019
Macronix International Co., Ltd., Hsinchu, TW;
Hsiao-Ming Lin, Taoyuan, TW;
MACRONIX International Co., Ltd., Hsinchu, TW;
Abstract
A headphone driver includes first and second differential driver differential driver. The first differential driver has a first positive output terminal and a first negative output terminal. The first positive output terminal is coupled to a first terminal of a first speaker. The first negative output terminal is virtually shorted to a reference voltage through a first feedback circuit in the first differential driver. The second differential driver has a second positive output terminal and a second negative output terminal. The second positive output terminal is coupled to a first terminal of a second speaker, wherein the second negative output terminal is virtually shorted to the reference voltage through a second feedback circuit in the first differential driver. The first negative terminal and the second negative terminal are connected to a common line, which is to be further connected to second terminals of the first speaker and the second speaker.