Current reference circuit for current-mode read-only-memory

Details Current reference circuit for current-mode read-only-memory Current reference circuit for current-mode read-only-memory

1997-07-11

1999-07-27

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327538, 327541, 323315, G05F 302

Patent

active

059296976

ABSTRACT:
A current reference circuit for use in a memory sense amplifier is described, which generates a mid-point current reference that is insensitive to fabrication process variations. This circuit is also robust enough to handle distinctly different levels of "0" and "1" sense currents without causing clipping of the mid-point reference current. Adequate sensing levels for the bit line sense amplifier are thus ensured.

REFERENCES:
patent: 4103249 (1978-07-01), Burdick
patent: 4464591 (1984-08-01), Rapp
patent: 4675594 (1987-06-01), Reinke
patent: 5257039 (1993-10-01), Chung et al.
patent: 5304863 (1994-04-01), Fruhauf et al.
patent: 5635869 (1997-06-01), Ferraiolo et al.
patent: 5798637 (1998-08-01), Kim et al.

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