Lavon K Cooper

US Patent:

53493028, Sep 20, 1994

Filed:

May 13, 1993

Appl. No.:

8/061603

Inventors:

Lavon K. Cooper - Mound MN

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

G11C 1140

US Classification:

365207

Abstract:

Sense amplifier input stage for reading the output of a single array memory having an "unknown" output, a reference "one" output and a reference "zero" output. A first differential amplifier compares the "unknown" output to the reference "one" output, and a second differential amplifier compares the unknown output to a reference zero output. The first and second differential amplifier share the same load Y resistors. Voltage offsets arising in the memory and in the sense amplifier input stage are compensated before the comparisons are made. When the unknown is a one the output has a first polarity and when the unknown is a zero, the output has an opposite polarity.