Static information storage and retrieval – Read/write circuit – Differential sensing
Patent
1997-11-26
1999-05-11
Mai, Son
Static information storage and retrieval
Read/write circuit
Differential sensing
365208, 36518907, G11C7/02
Patent
active
059035048
ABSTRACT:
An operational amplifier-based voltage multiplier circuit ("op amp circuit") implemented as an integrated circuit, and a memory chip including such an op amp circuit. The op amp circuit includes a variable operational feedback or input resistance (or a variable operational feedback resistance and a variable input resistance), and preferably also circuitry for controlling at least one variable resistance in response to control bits to cause the op amp circuit to assert a selected output voltage in response to a given input voltage. Preferably, each set of control bits determines a binary control word whose binary value has a simple functional relation to the value of the output voltage selected thereby. Preferably, the memory chip includes an array of memory cells (e.g, flash memory cells) and a control unit for controlling memory operations including programming, reading, and erasing the memory cells. The op amp circuit outputs each selected output voltage in response to a different binary control word asserted by the control unit. Each binary control word is preferably determined by a set of control bits whose binary value has a simple functional relation to the value of the output voltage selected thereby. The memory chip preferably includes non-volatile data storage units which store bits of the binary control words.
REFERENCES:
patent: 5142496 (1992-08-01), Van Buskirk
patent: 5218570 (1993-06-01), Pascucci et al.
patent: 5339272 (1994-08-01), Tedrow et al.
patent: 5387879 (1995-02-01), Satoh
patent: 5487045 (1996-01-01), Trodden
patent: 5523721 (1996-06-01), Segawa et al.
patent: 5579274 (1996-11-01), Van Buskirk et al.
patent: 5581213 (1996-12-01), Linder et al.
patent: 5621686 (1997-04-01), Alexis
patent: 5654918 (1997-08-01), Hammick
Briner Michael S.
Chevallier Christophe J.
Mai Son
Micro)n Technology, Inc.
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