Apparatus and method for providing a dual sense amplifier with divided bit line isolation
US4807195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | May 18, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A dual sense amplifier construction with divided bit line isolation. A switch is disposed at approximately the midpoint of a bit line to divide the bit line into first and second bit line segments. When opened, the switch provides electrical isolation between the first and second bit line segments so that an accessed memory charge can be isolated from one-half of the capacitance associated with the bit line. Once the isolated memory charge is read and pre-amplified, the remaining bit line capacitance is no longer of concern. The switch is then closed to provide electrical connection between the first and second bit line segments, thereby allowing the completion of the amplification operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.