Driver circuit having a current mirror circuit
US4873673A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4094
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device is provided wherein a current mirror circuit controlled by a pulse input voltage is utilized and a load is driven in such a manner that the output current of the current mirror circuit becomes a substantially constant current. Further, the output voltage of the current mirror circuit can be compared with a predetermined reference voltage by a comparator, with the current mirror circuit being controlled by the output voltage of the comparator in accordance with the result of comparison. The driver circuit can be used for driving the data lines of a dynamic random access memory or an external capacitance load. With these techniques, power consumption and peak current are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.