Integrated circuit having fuse circuit

摘要

This invention is related to an integrated circuit (IC) having a fuse circuit. In such an IC device, it is very difficult to hold a specific gain of the IC because of a leakage of a gap between the fuse terminals called "re-glown fuse" or "glown-back fuse", and the IC suffers from malfunction. The present invention provides a fuse circuit to detect whether a fuse has been blown or not, by judging whether the fuse resistance is larger or smaller compared to a predetermined threshold resistor, which generates a judging potential corresponding to a fuse condition. Thus the IC can be used without malfunction.