Wideband InP digital-to-analog converter integrated with a SiGe clock distribution network
US9602125B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/742
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital-to-analog converter (DAC) including a DAC core circuit having a plurality of input lines each being responsive to a digital bit input signal and an output line outputting a converted analog signal of the digital bits. The DAC also includes a clock circuit responsive to a clock input signal at one frequency and outputting a clock output signal at another frequency. The DAC also includes a clock tree distribution network responsive to the clock output signal from the clock circuit and splitting the clock output signal into a plurality of split clock signals that are applied to the DAC core circuit, where the DAC core circuit is fabricated in an indium phosphide (InP) semiconductor material and the clock tree distribution network is fabricated in a silicon germanium (SiGe) semiconductor material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.