Current source blocks in monotonic precise current DAC
US6922162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/747
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A two-dimensional matrix decoder of a digital-to-analog converter comprises an array of current cells, the cells having a current source means or a current divider means and a switching means, all cells being activatable in a pre-determined sequence. The matrix decoder comprises:a selection means outputting a first selection signal for selecting a cell, a cell state signaling means outputting a cell state signal determining whether a cell comes before or after the selected cell in the pre-determined sequence, and matrix logic associated with each cell for generating a control signal suitable for controlling the switching means of that cell for switching current from the current source means or current divider means of that cell to at least one of a first node or a second node, the control signal being generated depending on the first selection signal and the cell state signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.