High resolution circuit and method for sensing antifuses

Details High resolution circuit and method for sensing antifuses High resolution circuit and method for sensing antifuses

1995-05-31

1996-05-07

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

327525, 327 51, H01H 3776

Patent

active

055149804

ABSTRACT:
A high resolution sense amplifier and method for sensing the state of antifuses in an integrated circuit is capable of correctly reading even a defectively programmed antifuse having a resistance of up to 20 K.OMEGA. as being programmed. The sense amplifier reads two antifuses at each programmable location, and correctly reads that location as being programmed if either or both of the antifuses at that location have been blown.

REFERENCES:
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patent: 4730129 (1988-03-01), Kunitoki et al.
patent: 5345110 (1994-09-01), Renfro et al.
patent: 5418487 (1995-05-01), Armstrong, II
patent: 5424672 (1995-06-01), Cowles et al.
Neil H. E. Weste et al., Principles of CMOS VLSI Design 395-98 (Addison-Wesley Publishing Co., 2d Ed. 1993).

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