Self-tracking integrated differential termination resistance
US6590413B1 · kind B1 · utility
35Cited by
19References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2002 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0298
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and circuitry for implementing an integrated differential termination resistance that is self-tracking. The invention employs a mechanism that automatically tracks variations on a number of circuit and signal parameters including input common-mode voltage, as well as varying device characteristics due to fluctuations in processing, power supply voltage and temperature. It then adjusts the resistance across the two differential input signals in a self-calibrating manner to obtain a substantially constant termination resistance for a given application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.