Programmable integrated circuit AC resistor network
US4551705A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1983 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Jan 21, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/74
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A monolithic integrated circuit D-to-A converter and programmable AC resistor network and current source is disclosed in which an array of FET cells formed on a semiconductor body is divided into a plurality of distinct sets which may be grouped in two groups of corresponding sets. The source and drain regions respectively of all of the cells in each group are connected in common. The gate regions of the cells in each distinct set are also connected. In embodiments comprising two groups of cells, gate control logic is included which may supply signals of opposite binary states respectively to the gate regions of corresponding sets of cells in the two groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.