Driver having substantially constant and linear output resistance, and method therefor
US6181170A · kind A · utility
7Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Jul 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitter module (100) for LVDS systems provides differential data transmission (.DELTA.V between lines 1, 2) with an resistance (R.sub.OUT) which is substantially independent from the manufacturing process and which is substantially linear over the whole range of signal voltages ((B): .DELTA.V.sub.MAX and (C): .DELTA.V.sub.MAX /2). The driver (100) comprises a self-adjusting bias circuit (201, 202) for the output stages (110, 120) which monitors the currents into the lines and which sets the line output voltages to predetermined values (ABC) when predetermined currents are detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.