High-speed cross-coupled sense amplifier

Details High-speed cross-coupled sense amplifier High-speed cross-coupled sense amplifier

2005-04-26

2005-04-26

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S057000, C365S207000

Reexamination Certificate

active

06885222

ABSTRACT:
A sense amplifier has a pair of internal nodes that are precharged to a power-supply level. A first pair of n-channel transistors supplies current to the internal nodes responsive to a pair of data signals, both of which are initially high. When one of the data signals begins falling toward the low level, the corresponding n-channel transistor immediately reduces the current supplied to one of the internal nodes. A second pair of n-channel transistors, cross-coupled to the internal nodes, amplifies the resulting potential difference between the internal nodes, thereby pulling down the potential of one of the internal nodes. An output signal is generated from one or both of the internal nodes. The output signal is obtained quickly, because amplification begins without delay.

REFERENCES:
patent: 5377150 (1994-12-01), McClure
patent: 5982690 (1999-11-01), Austin
patent: 6359473 (2002-03-01), You et al.
patent: 11-260064 (1999-09-01), None

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