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:
Jun. 04, 2013
Filed:
Sep. 22, 2011
Chien-hung Kuo, Taipei, TW;
Cheng-en Hsieh, Kaohsiung, TW;
Chien-Hung Kuo, Taipei, TW;
Cheng-En Hsieh, Kaohsiung, TW;
National Taiwan Normal University, Taipei, TW;
Abstract
An SAR ADC capable of reducing energy consumption, including a voltage selecting circuit for configuring a capacitor circuit to form a first equivalent capacitor having a capacitance of (2m−1)C, a second equivalent capacitor having a capacitance of (2−2m−1)C, a fourth equivalent capacitor having a capacitance of (2m−1)C, and a fifth equivalent capacitor having a capacitance of (2−2m−1)C, wherein, the first equivalent capacitor has one terminal coupled to a reference voltage or a ground voltage, and the other terminal coupled to a positive input end of a comparator; the second equivalent capacitor is coupled between a common mode voltage and the positive input end; the fourth equivalent capacitor has one terminal coupled to the ground voltage or the reference voltage, and the other terminal coupled to a negative input end of the comparator; and the fifth equivalent capacitor is coupled between the common mode voltage and the negative input end.