Sense amplifier

Details Sense amplifier Sense amplifier

1990-03-29

1991-07-09

Clawson, Jr., Joseph E.

Static information storage and retrieval

Floating gate

Particular biasing

36518905, 36518907, 365205, 365208, 365210, G11C 1140

Patent

active

050311450

ABSTRACT:
A sense amplifier for determining the logic state of a memory cell consists of a switch transistor (N2) for receiving current during sensing from the memory cell (NV1), a nonvolatile transistor (NV2) providing a reference current which is compared to a representation of the sensed current through the switch transistor (itself dependent on the state of NV1), a bistable latch (N4P4, N5P5) which is switched into one or other of its states depending on the result of the comparison, and a feedback from the output of the latch (NODE 3) to the gate of the switch transistor (N2) to isolate the amplifier from the memory cell after sensing.

REFERENCES:
patent: 4845675 (1989-07-01), Krenik et al.
patent: 4916665 (1990-04-01), Atsumi et al.
patent: 4943948 (1990-07-01), Morton et al.

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