Patent ID: 7940113

Claim:
A fuse trimming circuit comprising: trimming pads; a fuse resistance configured to be connected to said trimming pads and blown out by a trimming current which flows through said trimming pads; an input circuit configured to output one of a first potential and a second potential based on whether or not said fuse resistance is blown out; and current limit units configured to be provided on paths from one of said trimming pads through said fuse resistance to at least one of a first power line feeding said first potential and a second power line feeding said second potential, and paths from another of said trimming pads through said fuse resistance to said at least one of the first power line and the second power line, wherein said input circuit includes: a first potential input terminal configured to be connected to said first power line, and a second potential input terminal configured to be connected to said second power line, wherein one of said current limit units is provided between said first potential input terminal and said first power line, a first electrostatic protection element configured to be connected directly between an input terminal and said first potential input terminal; and a second electrostatic protection element configured to be connected directly between said input terminal and said second potential input terminal, wherein said fuse resistance is connected to a second input terminal at one end, and connected to said second power line at another end.