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:
Sep. 10, 2019
Filed:
Oct. 23, 2018
Shenzhen Goodix Technology Co., Ltd., Shenzhen, CN;
Shuo Fan, Shenzhen, CN;
SHENZHEN GOODIX TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
An analog-to-digital conversion circuit and method are provided. At a sampling stage, the first capacitor array connects lower electrode plates of N capacitors to a first input voltage, connect lower electrode plates of the other capacitors to a common-mode voltage, and connect upper electrode plates of all the capacitors to the common-mode voltage to sample the first input voltage; in an iconversion at a conversion stage, the logic circuit controls, the lower electrode plate of an icapacitor to connect to a reference voltage or a ground voltage, a first comparison voltage output by the first capacitor array approximates a second comparison voltage; and the comparator stores a comparison result between the first and the second comparison voltage to an i+1flag bit in the logic circuit, and analog-to-digital conversion is completed when i+1 is equal to the total number of capacitors in the first capacitor array.