Apparatus and method for high-speed serial communications
US7474133B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018528
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus, device, and method for high-speed serial communications are provided. An input circuit is operable to receive an input signal, where the input circuit includes transistors forming (i) a first differential pair associated with a first current source and (ii) a second differential pair associated with a second current source. An output circuit is coupled to the input circuit and is operable to generate an output signal based on the input signal. A sensing circuit is operable to estimate a voltage associated with one of the current sources. A comparator is operable to compare the estimated voltage and a reference voltage and to selectively enable one of the differential pairs and disable another of the differential pairs based on the comparison. The differential pairs could be enabled and disabled using a first switch associated with the first differential pair and a second switch associated with the second differential pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.