Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2006-06-06
2006-06-06
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C365S205000
Reexamination Certificate
active
07057420
ABSTRACT:
A semiconductor device having a sense amplifier driver with a capacitor affected by off current is provided. The sense amplifier driver, which receives a clock signal and generates a sense amplifier enable signal by buffering the clock signal, includes a plurality of inverters connected in series and at least one capacitor. A PMOS transistor of at least a first inverter of the plurality of inverters is connected between a dummy bit line, in which voltage drop by the off current is generated, and the output terminal of the first inverter and the at least one capacitor is connected between the dummy bit line and the output terminal of a second inverter which inverts an output signal of the first inverter. Therefore, the capacitance of the at least one capacitor is determined by voltage of the dummy bit line. Therefore, since the voltage drop of the dummy bit line is larger when the magnitude of the off current is larger, the capacitance of the at least one capacitor is larger. Therefore, active timing of the sense amplifier enable signal is determined according to the capacitance of the capacitor.
REFERENCES:
patent: 6490214 (2002-12-01), Kawasumi
patent: 6525979 (2003-02-01), Kato
patent: 6738296 (2004-05-01), Sung et al.
patent: 6804153 (2004-10-01), Yoshizawa et al.
patent: 6831853 (2004-12-01), Lin et al.
Kim Tae-hyoung
Song Tae-joong
Mills & Onello LLP
Nu Ton My-Trang
Samsung Electronics Co,. Ltd.
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