Fuse sensing scheme

Details Fuse sensing scheme Fuse sensing scheme

2011-07-26

2011-07-26

Stark, Jarrett J (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Integrated circuit structure with electrically isolated...

Passive components in ics

C337S206000

Reexamination Certificate

active

07986024

ABSTRACT:
A fuse circuit includes a fuse configured for programming a configuration of an integrated circuit device and a resistive element having a known resistance value operably coupled in parallel with the fuse. The fuse and the resistive element form a parallel circuit configured for quickly sensing a state of the fuse in relation to the known value of the resistive element. In one embodiment, the device may further include a sense circuit operably coupled to the parallel circuit combination of the fuse and the resistive element. The sense circuit is configured to sense one of a FUSED state and an UNFUSED state of the fuse, for example, based on a comparison between a reference resistance and a FUSED resistance of the fuse when coupled to the known resistance. The fuse may comprise a programmable fuse, and the resistive element may comprise a MOS transistor.

REFERENCES:
patent: 6091273 (2000-07-01), Bernstein et al.
patent: 2004/0218328 (2004-11-01), Kuzuno et al.
patent: 2007/0064508 (2007-03-01), Sugimura

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