Charge transfer device input circuitry
US4223233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1977 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | May 26, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/287
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A charge transfer device having a source diffusion region, an isolation gate region, a reference voltage gate region and an input signal gate region disposed contiguously along such device, the isolation gate region being adapted for coupling to a pulse voltage source, the duration of such pulse being related to a predetermined sampling interval (and therefore related to the bandwidth of an input signal being sampled), the reference voltage gate region being adapted for coupling to a reference voltage source and the input signal gate region being adapted for coupling to the input signal. During each clock interval prior to the sampling interval the source diffusion region is pulsed, thereby enabling charge to pass from such region into the reference voltage gate region and the input gate region. During the sampling interval the potential energy level of the isolation gate region is lowered to enable equilibration of the potential of the charge in the input gate region with the potential in the reference voltage source region, the charge in such input gate region thereby being proportional to the input signal level during the sampling interval. At the end of the sampling interval th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.