Static information storage and retrieval – Read only systems – Magnetic
Reexamination Certificate
2005-07-12
2005-07-12
Hoang, Huan (Department: 2827)
Static information storage and retrieval
Read only systems
Magnetic
C365S207000, C365S158000
Reexamination Certificate
active
06917534
ABSTRACT:
An offset compensated memory element voltage supply including a differential amplifier with a compensation circuit, and a transistor with a gate connected to the output of the differential amplifier. The compensation circuit of the differential amplifier includes a compensation capacitor that stores a compensation voltage during a calibration phase, and applies the stored compensation voltage to a compensation input of the compensation circuit of the amplifier during a measurement phase. Feedback from a source of the transistor controls the output of the differential amplifier to maintain a standard voltage across a resistive memory element connected to the source during measurement of the resistance of the resistive memory element, and the compensation circuit improves the accuracy of the voltage across the resistive memory element by compensating for an offset voltage of the differential amplifier.
REFERENCES:
patent: 6262625 (2001-07-01), Perner et al.
patent: 6388917 (2002-05-01), Hoffmann et al.
patent: 6396733 (2002-05-01), Lu et al.
patent: 6650562 (2003-11-01), Holden et al.
Dickstein , Shapiro, Morin & Oshinsky, LLP
Hoang Huan
Micro)n Technology, Inc.
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