Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2007-08-02

2009-06-09

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Flip-flop used for sensing

C365S154000

Reexamination Certificate

active

07545693

ABSTRACT:
A memory device including a memory cell array with information cells and reference cells arranged and a sense amplifier configured to sense data stored in the memory cell array, wherein the sense amplifier has a latch-type of differential amplifier configured to detect a current difference between a selected information cell and a selected reference cell, a pair of transistors attached to the differential amplifier, the pair of transistors being on-driven to keep the differential amplifier inactive in a stationary state and off-driven to make the differential amplifier active at a sensing time, whereby the current difference is amplified as a drain voltage difference of the pair of transistors, and a pair of capacitors hold voltages corresponding to the respective currents of two current paths of the differential amplifier prior to inputting the current difference, and apply a certain offset voltage to the pair of transistors at the sensing time.

REFERENCES:
patent: 5963495 (1999-10-01), Kumar
patent: 6195289 (2001-02-01), Pasotti et al.
patent: 6438035 (2002-08-01), Yamamoto et al.
patent: 6862208 (2005-03-01), Palmer et al.
patent: 7136308 (2006-11-01), Kant et al.
patent: 2006/0050562 (2006-03-01), Cernea et al.
patent: 2006/0239073 (2006-10-01), Toda
patent: 2007/0019467 (2007-01-01), Toda
patent: 2007/0121376 (2007-05-01), Toda
patent: 2007/0147112 (2007-06-01), Edahiro et al.
patent: 2007/0165473 (2007-07-01), Suzuki et al.

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