Low power dissipating sense amplifier

Details Low power dissipating sense amplifier Low power dissipating sense amplifier

2005-12-13

2005-12-13

Mai, Son (Department: 2827)

Static information storage and retrieval

Read/write circuit

Flip-flop used for sensing

C365S185200, C365S185210, C365S210130

Reexamination Certificate

active

06975549

ABSTRACT:
Low power sense amplifier for amplifying a small current difference associated with a memory cell of a memory array is disclosed. The sense amplifier is connected with a memory array having multiple of even columns and multiple of odd columns. A small read current representing the digital data stored at a memory cell is obtained from the memory array via one of the two complementary data lines. The sense amplifier builds a small voltage difference based on a difference between the small read current and a small reference current obtained from a memory array, and amplifies the small voltage difference to produce two amplified signals. One of the amplified signals is selected by the sense amplifier using an even/odd column decoding scheme. The memory array also uses the even/odd column decoding scheme to output the read current to one of the two complementary data lines. A method for how to use the disclosed sense amplifier is also described.

REFERENCES:
patent: 5475647 (1995-12-01), Yim et al.
patent: 6275441 (2001-08-01), Oh
patent: 6909665 (2005-06-01), Lee

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