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:
Nov. 04, 2008
Filed:
Aug. 17, 2006
Shiah Siew Wong, Singapore, SG;
Wee Sien Hong, Singapore, SG;
Tien Yew Kang, Singapore, SG;
Chew Yuan Woong, Singapore, SG;
Shiah Siew Wong, Singapore, SG;
Wee Sien Hong, Singapore, SG;
Tien Yew Kang, Singapore, SG;
Chew Yuan Woong, Singapore, SG;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Panasonic Semiconductor Asia Pte. Ltd., Singapore, SG;
Abstract
A differential input Class D audio power amplifier incorporating a differential error amplifier is introduced. In response of differential input signal, this differential error amplifier generates two error signals, which subsequently generates final output signal. This architecture makes it the effect of feedback signal error correction doubled, which helps in achieving good THD. In addition, input port of this architecture is also compatible with single-ended signal. A pop noise suppression technique for this differential input Class D audio power amplifier is also introduced.