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:
Apr. 17, 2001
Filed:
Mar. 19, 1999
Gwo-Shu Chiou, Hsinchu Hsien, TW;
Winbond Electronics Corp., Hsinchu, TW;
Abstract
A current-switching method and circuit is provided for use with digital-to-analog converters (DACs) to provide improved compliance and linearity in the output current characteristic. In the current-switching circuit, an additional transistor that is set to a permanently-on state is connected at the output port of the current-switching circuit, which can help increase the output impedance of the current-switching circuit. Moreover, the problem of simultaneous switching-off of two control transistors can be eliminated by connecting the gate of one transistor to a reference voltage whose magnitude is set between the logic-high and logic-low voltage states of the input digital signal. The current-switching method and circuit can therefore meet the requirements of 3 V working voltage with 1.2 V output compliance and the requirements of 10 bits linearity in the output current characteristic.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile