Reduction of data dependent power supply noise when sensing the state of a memory cell
US6466488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Mar 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/063
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A logic level detection circuit that includes a sense amplifier and a consumption equilibration circuit that is topologically distinct from the sense amplifier and that reduces and/or substantially eliminates data dependent electrical consumption by having a data dependent electrical consumption that compensates the data dependent electrical consumption of the sense amplifier. The sense amplifier may be implemented as a current-sensing sense amplifier, and the consumption equilibration circuit may be implemented as a selectively enabled current source that is responsive to a signal generated by the current-sensing sense amplifier. The consumption equilibration circuit may be implemented with a small number of transistors and in a small chip area compared to the number of transistors and chip area used for implementing the sense amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.