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:
May. 19, 2009
Filed:
Oct. 04, 2007
Chan-hsiang Weng, Kaohsiung, TW;
Tsung-hsien Lin, Taoyuan County, TW;
Chan-Hsiang Weng, Kaohsiung, TW;
Tsung-Hsien Lin, Taoyuan County, TW;
Mediatek Inc., Hsin-Chu, TW;
National Taiwan University, Taipei, TW;
Abstract
The invention provides a continuous-time delta sigma modulator. In one embodiment, the continuous-time delta sigma modulator comprises a series of integrators, a quantizer, and a loop delay compensation circuit. The integrators are coupled in series and generate an analog output signal according to an analog input signal. The quantizer quantizes the analog output signal according to a reference voltage to generate a digital output signal as the output of the continuous-time delta sigma modulator. The loop delay compensation circuit adjusts the reference voltage of the quantizer according to the digital output signal to compensate the continuous-time delta sigma modulator for a loop delay.