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:
Oct. 04, 2011
Filed:
Apr. 14, 2010
Wei-hsuan Tu, Hsinchu, TW;
Tzung-hung Kang, Hsinchu County, TW;
Wei-Hsuan Tu, Hsinchu, TW;
Tzung-Hung Kang, Hsinchu County, TW;
Mediatek Inc., Science-Based Industrial Park, Hsin-Chu, TW;
Abstract
A multiplying digital-to-analog converter includes an operational amplifier (OP-amp) operated under a first power supply voltage and a second power supply voltage; an OP-amp input switch block coupled to a common mode voltage for selectively coupling the common mode voltage to input nodes of the OP-amp, wherein the common mode voltage is substantially equal to the first power supply voltage; a capacitor block coupled to the OP-amp input switch block; a sampling switch block coupled to the input signal for selectively coupling the input signal to the capacitor block; a reference voltage switch block coupled to the capacitor block for selectively coupling the reference signal to the capacitor block; and a feedback switch block coupled between the capacitor block and output nodes of the OP-amp.