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. 09, 2008
Filed:
Jul. 28, 2006
Sumant Bapat, Santa Clara, CA (US);
Ansuya Bhatt, Cupertino, CA (US);
Christopher B. Heithoff, Sunnyvale, CA (US);
Raminder Jit Singh, San Jose, CA (US);
Sumant Bapat, Santa Clara, CA (US);
Ansuya Bhatt, Cupertino, CA (US);
Christopher B. Heithoff, Sunnyvale, CA (US);
Raminder Jit Singh, San Jose, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A fully differential class D amplifier is provided. The class D amplifier includes an active amplifier in the feedback path of the modulator. In one embodiment, the class D amplifier includes a fully differential amplifier as an input buffer, in which a supply-independent reference voltage is used as the common mode voltage of the output of the fully differential amplifier. In one embodiment, the class D amplifier includes a pulse width modulation circuit that includes rail-to-rail comparators.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile