Multiplexed digital-to-analog converters used in communication devices
US6621437B2 · kind B2 · utility
6Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/662
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system includes a transceiver having mixers, variable gain amplifiers, a modulator, a local oscillator and power amplifiers that may receive control signals generated by a Digital-to-Analog Converter (DAC). The DAC may include a multiplexer that receives digital values that are transferred to a DAC core, converted to analog values, and stored in sample-and-hold circuits. The one DAC may service multiple devices within the transceiver with control signals. A smart timer may generate select signals to the multiplexer and sample-and hold circuits to prioritize updating of the control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.