Current reference circuit for current-mode read-only-memory
US5929697A · kind A · utility
6Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.