Static information storage and retrieval – Read/write circuit – Differential sensing
Reexamination Certificate
2005-04-12
2005-04-12
Nelms, David (Department: 2818)
Static information storage and retrieval
Read/write circuit
Differential sensing
C365S196000, C365S189090, C327S343000, C327S103000
Reexamination Certificate
active
06879534
ABSTRACT:
The invention includes an apparatus and a method for minimizing power supply sensitivity of a differential amplifier. The apparatus includes a current source providing a differential amplifier bias current to a common source node of the differential amplifier. A voltage sensor senses variations of a power supply associated with the current source. Variations sensed by the voltage sensor control a magnitude of the differential amplifier bias current. The method includes a current source providing the source current. A voltage potential of the common source node is sensed. The current source is adjusted depending upon the sensed voltage potential of the common source node, thereby adjusting a magnitude of the source current.
REFERENCES:
patent: 5343086 (1994-08-01), Fung et al.
patent: 5544110 (1996-08-01), Yuh
patent: 5677634 (1997-10-01), Cooke et al.
patent: 5801556 (1998-09-01), LeFevre
patent: 5828329 (1998-10-01), Burns
patent: 5838145 (1998-11-01), Poon et al.
patent: 5969998 (1999-10-01), Oowaki et al.
patent: 5999050 (1999-12-01), Baltus
patent: 6064188 (2000-05-01), Takashima et al.
patent: 6128239 (2000-10-01), Perner
patent: 6215291 (2001-04-01), Mercer
patent: 6232832 (2001-05-01), Kirkpatrick, II
patent: 6351182 (2002-02-01), Drapkin et al.
patent: 6434707 (2002-08-01), Eklof
patent: 6513383 (2003-02-01), Okano et al.
patent: 6587002 (2003-07-01), Vogt
patent: 6700416 (2004-03-01), Cowles
patent: 6710618 (2004-03-01), Murray
patent: 20020034112 (2002-03-01), Kato et al.
patent: 20020063575 (2002-05-01), Kim et al.
patent: 20020145412 (2002-10-01), Kato
patent: 20030048653 (2003-03-01), Watanabe et al.
patent: 2004192743 (2004-07-01), None
Perner Frederick
Smith Kenneth
Nelms David
Pham Ly Duy
Short Brian R
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