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:
Jun. 17, 2025
Filed:
May. 20, 2022
Aac Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen, CN;
Dong Han, Singapore, SG;
Chuationg Kee, Singapore, SG;
AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD., Shenzhen, CN;
Abstract
The present invention provides a single-end-to-differential microphone circuit and an electronic equipment, including: an amplifier, a microphone connected to the positive input end of the amplifier, a coupling capacitor Cconnected to the negative input end of the amplifier, a first feedback capacitor Cconnected to the negative output end of the amplifier, a first feedback resistor Rconnected in parallel with the first feedback capacitor C, a second feedback capacitor connected to the positive output end of the amplifier C, and a second feedback resistor Rconnected in parallel with the second feedback capacitor C. The circuit of the present invention can adopt a microphone structure with smaller capacity, and at the same time has a better system signal to noise ratio.