Differential signal transmission circuit
US6208161A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1998 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Dec 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/30111
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A differential signal transmission circuit for transmitting a high speed pulse signal through relatively long transmission cables. The differential signal transmission circuit includes a CMOS differential driver for receiving a high speed signal to be transmitted from an LSI circuit and providing the signal to a differential transmission cable, an impedance matching circuit connected between an output of the CMOS differential driver and ground to substantially decrease an output impedance of the driver, and a series termination circuit provided between the output of the CMOS differential driver and the differential transmission cable to match a sum of resistance of the series transmission circuit and an overall impedance at the output of the driver with a characteristic impedance of the differential transmission cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.