Impedance and swing control for voltage-mode driver
US10033412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Dec 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M9/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver circuit includes a plurality of output circuits coupled in parallel between a differential input and a differential output and having a first common node and a second common node. Each of the plurality of output circuits includes a series combination of a pair of inverters and a pair of resistors, coupled between the differential input and the differential output; first source terminals of the pair of inverters coupled to the first common node; and second source terminals of the pair of inverters coupled to the second common node. The driver circuit further includes a first voltage regulator having an output coupled to the first common node of the plurality of output circuits; a second voltage regulator having an output coupled to the second common node of the plurality of circuits; and a current compensation circuit coupled between the outputs of the first voltage regulator and the second voltage regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.