Static information storage and retrieval – Floating gate – Particular biasing
Reexamination Certificate
2007-07-17
2007-07-17
Auduong, Gene N. (Department: 2827)
Static information storage and retrieval
Floating gate
Particular biasing
C365S189090, C365S226000
Reexamination Certificate
active
11355394
ABSTRACT:
A voltage reference circuit provides a reference voltage that can be precisely programmed. The threshold voltage of a first non-volatile memory (NVM) transistor is programmed while coupled in parallel with a reference NVM transistor. During programming, the reference NVM transistor has a floating gate coupled to ground through a first set of capacitors, and coupled to a reference voltage through a second set of capacitors. The program threshold voltage of the first NVM transistor is dependent on the first and second sets of capacitors. The first and reference NVM transistors are then coupled in parallel, and a differential amplifier is used to generate a single-ended reference voltage in response to the programmed threshold voltage of the first NVM transistor. Capacitors can be transferred between the first set and the second set, thereby providing precise adjustment of the single ended reference voltage.
REFERENCES:
patent: 4977527 (1990-12-01), Shaw et al.
patent: 6147908 (2000-11-01), Abugharbieh et al.
patent: 6184726 (2001-02-01), Haeberli et al.
patent: 6301156 (2001-10-01), Kurosaki
patent: 2006/0145747 (2006-07-01), Ucciardello et al.
Eftimie Sabin A.
Georgescu Sorin S.
Poenaru Ilie Marian I.
Auduong Gene N.
Bever Hoffman & Harms LLP
Catalyst Semiconductor, Inc.
Hoffman E. Eric
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