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. 24, 2002
Filed:
May. 25, 2001
Thomas Blon, Santa Cruz, CA (US);
Infineon Technologies North America Corp., San Jose, CA (US);
Abstract
Digital-to-analog converters (DACs) are used to convert digital signals to analog signals. DAC's are typically made of transistors, linked in one of several ways, to quickly convert large amounts of digital information to useful analog signals. Sample applications may include compact disc players and DVD players. DACs with transistors having more uniform outputs result from better control of the source-to-gate voltage. This control may be achieved by using a current source for the gate voltages, or in other embodiments, by designing and manufacturing the bus bar for the source voltage and the gate voltage so as to achieve uniform source-to-source and gate-to-source voltages. With this control, uniform voltage drops, linear within 0.1%, may be achieved in transistors used in 5-bit to 15-bit DACs, leading to better conversion.