Fuse state detection circuit

Details Fuse state detection circuit Fuse state detection circuit

2006-02-07

2006-02-07

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

C326S014000

Reexamination Certificate

active

06995601

ABSTRACT:
A fuse state detection circuit (300) has a reference circuit part (302, 302′) and a fuse detection circuit part (308, 308′), the reference circuit part (302, 302′) having a fuse (304, 304′) identical to a fuse (306, 306′) under detection. A reference voltage is between a voltage of a blown fuse (306, 306′) under detection and a voltage of an un-blown fuse (306, 306′) under detection, thus distinguishing a blown state of the fuse (306, 306′) under detection from an un-blown state of the fuse (306, 306′) under detection.

REFERENCES:
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patent: 5731733 (1998-03-01), Denham
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patent: 6087889 (2000-07-01), Mok
patent: 6208549 (2001-03-01), Rao et al.
patent: 6384664 (2002-05-01), Hellums et al.

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