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:
Mar. 15, 2011
Filed:
Sep. 02, 2009
Hiroyuki Kimura, Sendai, JP;
Hiroyuki Kimura, Sendai, JP;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A DAC unit, connected to a current supply transistor, includes first control transistors connected in parallel to each other, with each being connected in series to the current supply transistor. The first control transistors drive currents at different current values in response to a bias voltage. The DAC unit also includes second control transistors connected in parallel to each other, with each being connected in series to the current supply transistor. Each second control transistor drives the current having the same current value as one of the first control transistors in response to the single bias voltage. The first and second control transistors driving the currents having the same current value operate in a complementary manner based on part of a digital code. The DAC unit generates an output current by selectively combining at least one of the currents driven by the first control transistors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile