Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-10-11
2005-10-11
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S537000, C327S538000
Reexamination Certificate
active
06954102
ABSTRACT:
A memory cell sensing circuit to sense data from a memory cell includes a reference memory cell coupled to pass a reference current. A sense amplifier has a first input and a second input coupled to a bias circuit of the data memory cell. A first mirror mirrors the reference current to a voltage coupled to the first input of the sense amplifier. A second mirror mirrors the reference current to a voltage coupled to the bias circuit of the data memory cell. A third mirror mirrors the reference current to a voltage coupled to the second input of the sense amplifier through a pass gate.
REFERENCES:
patent: 5218570 (1993-06-01), Pascucci et al.
patent: 5386388 (1995-01-01), Atwood et al.
patent: 5773997 (1998-06-01), Stiegler
patent: 6133764 (2000-10-01), Griffith et al.
patent: 6507175 (2003-01-01), Susak et al.
patent: 6624685 (2003-09-01), Shih et al.
Bedarida Lorenzo
Frulio Massimiliano
Marsella Mirella
Sacco Andrea
Atmel Corporation
Lam Tuan T.
Nguyen Hiep
Sierra Patent Group Ltd.
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