Rail-to-rail line driver using differential cascode bootstraping
US9281967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Nov 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of rail-to-rail line drivers using differential cascode bootstrapping are described. In one embodiment, a differential line driver includes first and second differential driver output legs. The first output leg includes a first p-type cascode stack and a first n-type cascode stack, and the second output leg includes a second p-type cascode stack and a second n-type cascode stack. The differential line driver also includes a differential cascode bootstrap circuit arrangement coupled to an output of the differential line driver. More particularly, the differential cascode bootstrap circuit arrangement is coupled between the first and second differential output driver legs and the output of the differential line driver. According to aspects of the embodiments described herein, differential line drivers with overvoltage protection and rail-to-rail output swings may be achieved. Further, the differential line drivers may be generally smaller, with cascode stack transistors of reduced in size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.