Current steering digital-to-analog converter
US7312740B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/742
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current steering digital-to-analog converter (DAC) is provided. At least two lower-resolution DACs are used for converting a high-resolution digital signal. One of the two lower-resolution DACs is used for converting the most significant bits (MSB) of the high-resolution digital signal. The other of the two lower-resolution DACs is used for converting the least significant bits (LSB) of the high-resolution digital signal. By such arrangement, a device mismatch problem is avoided and the chance of variation occurrence during manufacturing process is reduced. The arrangement also simplifies the layout in the significantly scaled-down chip area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.