Sense-amplification with offset cancellation for static random access memories
US8488403B2 · kind B2 · utility
2Cited by
3References
15Claims
0Family size
Inventors
Key dates
| Filing date | Apr 8, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/104
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An offset cancellation scheme for sense amplification is described. The scheme consists of group of transistors which are selectively coupled to high and low voltage levels via multi-phase timing. This results in a voltage level on sensing nodes of interest which are a function of transistor mismatch. The resulting voltage levels act to compensates for the transistor mismatch, thereby improving the reliability of the sense amplifier in the presence of process non-idealities. The offset cancellation scheme is applicable to numerous types of sense amplifiers, amplifiers, and comparators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.