Self cut-off type sense amplifier operable over a wide range of

Details Self cut-off type sense amplifier operable over a wide range of Self cut-off type sense amplifier operable over a wide range of

1997-08-27

1999-02-16

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 51, G11C 706

Patent

active

058724656

ABSTRACT:
In a sense amplifier including an amplifier circuit for amplifying a difference in potential between data lines, an amplifier circuit activating circuit for receiving a sense start signal to activate the amplifier circuit and receiving a sense end signal to deactivate said amplifier circuit, a first sense detecting circuit for determining whether or not the amplifier circuit is activated in accordance with a first output voltage thereof and generating a first sense detection signal, a second sense detecting circuit for determining whether or not the amplifier circuit is activated in accordance with a second output voltage thereof and generating a second sense detection signal, and a sense end signal generating circuit for receiving at least one of the first and second sense detection signals and generating the sense end signal when a predetermined time has passed after at least one of the first and second sense detection signals is received, a masking circuit is connected between the first and second sense detecting circuits and the sense end signal generating circuit, and prohibits transmission of the first and second sense detection signals to the sense end signal generating circuit only when the first and second sense detection signals are both generated.

REFERENCES:
patent: 5155397 (1992-10-01), Fassino et al.
patent: 5329494 (1994-07-01), Suzuki et al.
patent: 5434824 (1995-07-01), Matsuzaki
patent: 5479374 (1995-12-01), Kobayashi et al.
patent: 5729499 (1998-03-01), Fujiwara et al.
patent: 5742549 (1998-04-01), Ochoa et al.

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