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. 20, 2007
Filed:
May. 23, 2005
Mian Z. Smith, Los Altos, CA (US);
Gregory Starr, San Jose, CA (US);
Mian Z. Smith, Los Altos, CA (US);
Gregory Starr, San Jose, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Various embodiments for differential output circuits with reduced transistor sizes and reduced DC currents provide efficient and flexible differential driver circuits. AC current boosting enables the switching transistors that drive the output nodes to be smaller in size. The AC current boost circuitry is shared by both switching current paths in the differential output circuit to reduce size and parasitic effects. Similarly, DC current circuitry is also shared by both switching current paths. The AC boost circuit and the DC bias circuit are made programmable to enable the output circuit to support multiple I/O standards with different specifications.