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. 24, 2017
Filed:
May. 04, 2017
Winbond Electronics Corp., Taichung, TW;
Fang-Ting Chou, Taichung, TW;
Chung-Chih Hung, Taichung, TW;
Winbond Electronics Corp., Taichung, TW;
Abstract
A digital to analog converter is provided, including a buffer circuit, a current switch circuit, and a weighted current generating circuit. The buffer circuit receives an N-bit digital signal and a clock signal, accordingly outputs N switch control signals. The current switch circuit includes N switches which are connected or disconnected according the switch control signals. The weighted current generating circuit includes M current source arrays, where each current source array outputs K output currents. Current values of each output current of each current source array respectively ascend in a binary-weighted manner. A minimum output current of an mth current source array is two times of a maximum output current of a (m−1)th current source array, N is obtained by multiplying M by K, and 1≦m≦M. An output of the digital to analog converter is a total current value of the output currents outputted by the M current source arrays.