Sense amplifier for semiconductor memory device having feedback

Details Sense amplifier for semiconductor memory device having feedback Sense amplifier for semiconductor memory device having feedback

1996-03-29

1997-04-08

Nguyen, Viet Q.

Static information storage and retrieval

Read/write circuit

Differential sensing

365207, 365190, 365205, 327 54, 327 55, 327 52, G11C 706

Patent

active

056194676

ABSTRACT:
A current sense amplifier circuit for a semiconductor memory device includes a differential amplifier which senses the signal currents input to first and second input nodes, amplifies the difference between the two signals and outputs the sense-amplified signals to first and second output nodes. A first feedback circuit is connected between the second input node and a current controlling node and has a controlling terminal connected to the first output node. A second feedback circuit is connected between the first input node and the current controlling node and has a controlling terminal connected to the second output node. By feeding back voltages from the counterpart output nodes through the cross-connected feedback circuits, the difference between low level input signals can be efficiently detected and a stable sense-amplified output is obtained.

REFERENCES:
patent: 5438287 (1995-08-01), Faue

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