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:
Dec. 21, 1993
Filed:
May. 01, 1991
Chinh D Nguyen, San Jose, CA (US);
Wei-Chan Hsu, Cupertino, CA (US);
Winbond Electronics N.A. Corporation, Santa Clara, CA (US);
Abstract
In a digital-to-analog converter (DAC) current source including a current mirror, an output transistor biased by a reference voltage and a steering transistor, a structure and a method are provided to implement the DAC current source without current spikes in the output current. Current spikes in the output current are avoided by including a transistor acting as a low-pass filter between the steering transistor and the output transistor. In one embodiment, the DAC current source circuit is implemented by PMOS transistors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile