US Patent 7940113 Fuse trimming circuit with higher reliability

Patent 7940113 was granted and assigned to Renesas Electronics on May, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Renesas Electronics

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7940113

Date of Patent

May 10, 2011

Patent Application Number

11401874

Date Filed

April 12, 2006

Patent Primary Examiner

‌

Quan Tra

Patent abstract

A fuse trimming circuit includes trimming pads, a fuse resistance, an input circuit and current limit units. The fuse resistance is configured to be connected to the trimming pads and blown out by a trimming current which flows through the trimming pads. The input circuit is configured to output one of a first potential and a second potential based on whether or not the fuse resistance is blown out. The current limit units are configured to be provided on paths from one of the trimming pads through the fuse resistance to at least one of a first power line feeding the first potential and a second power line feeding said second potential, and paths from another of the trimming pads through the fuse resistance to said at least one of the first power line and the second power line.