Robust method and apparatus for providing a digital single-ended output from a differential input
US6081162A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1999 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45479
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An embodiment of the invention is directed to a method of automatically adjusting a common mode output level of a first differential amplifier that is connected to a first digital circuit, in response to variation in a trip point level of a second digital circuit. The second digital circuit includes a replicate of the first digital circuit to generate a trip point level that is equivalent to a trip point level of the first digital circuit. The invention may yield a single-ended digital signal whose duty cycle accurately tracks that of an input differential signal pair in a manner that is substantially independent of fabrication process skew.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.