Hybrid sense amplifier and method, and memory device using same

Static information storage and retrieval – Read/write circuit – Differential sensing

Reexamination Certificate

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C365S205000

Reexamination Certificate

active

07990792

ABSTRACT:
Sense circuits, devices and methods are disclosed, including a sense amplifier circuit that has first and second complementary data lines and a sensing circuit. One of the data lines can be coupled to a memory cell for data sensing and the other data line can be used as reference. The sensing circuit has first and second complementary output nodes and is coupled to the data lines. In a first mode, the sensing circuit can sense a difference between a voltage on the first digit line and a voltage on the second digit line to generate a first voltage differential between the first and second output nodes. In a second mode, the sensing circuit can sense a difference between a current flow in the first digit line and a current flow in the second digit line to generate a second voltage differential between the first and second output nodes. Other sense circuits, devices and methods are also provided.

REFERENCES:
patent: 6157219 (2000-12-01), Okada
patent: 6225834 (2001-05-01), Gang
patent: 6856528 (2005-02-01), Kim
patent: 7038963 (2006-05-01), Lee
patent: 7405987 (2008-07-01), Moscaluk

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