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:
Feb. 22, 2011
Filed:
May. 27, 2009
Young Kyun Cho, Daejeon, KR;
Young Deuk Jeon, Daejeon, KR;
Jae Won Nam, Daejeon, KR;
Jong Kee Kwon, Daejeon, KR;
Young Kyun Cho, Daejeon, KR;
Young Deuk Jeon, Daejeon, KR;
Jae Won Nam, Daejeon, KR;
Jong Kee Kwon, Daejeon, KR;
Electronic and Telecommunications Research Institute, Daejeon, KR;
Abstract
A successive approximation register (SAR) analog-digital converter (ADC) and a method of driving the same are provided. The SAR ADC includes a first converting unit including a bit capacitor array corresponding to the number of bits and a correction capacitor array, a comparator outputting a high or low voltage corresponding to each capacitor according to an output voltage of the converting unit, and a correction unit correcting the output of the bit capacitor according to the output of the correction capacitor array among the high or low output of the comparator. Therefore, two bits having the same capacitance as a least significant bit (LSB) enable a digital output error to be corrected, so that a spurious free dynamic range (SFDR) of the signal converter is increased, and a signal to noise and distortion ratio (SNDR) of an output signal is improved.