Voltage mode line driver and pre-emphasis circuit
US8358156B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2010 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Feb 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0286
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment of the invention, a voltage-mode line driver circuit is provided for transmitting a differential signal. The voltage-mode line driver includes a first voltage swing circuit having an input coupled to receive an input signal and an output coupled to a first transmission line. A second voltage swing circuit is included, the second voltage swing circuit having an input coupled to receive an inversion of the input signal and an output coupled to a second transmission line. First and second pre-emphasis circuits are respectively coupled to the first and second voltage swing circuits. The first and second pre-emphasis circuits are configured to supplement the slew rate of respective first and second voltage swing circuits in response to a transition of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.