Apparatus and methods for transceiver interface overvoltage clamping
US9478608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jan 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D10/00
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for transceiver interface overvoltage clamping are provided. In certain configurations, an interface device includes a first p-type well region and a second p-type well region in an n-type isolation structure. Additionally, the clamp device includes a first p-type active region and a first n-type active region in the first p-type well region and electrically connected to a first terminal of the clamp device. Furthermore, the clamp device includes a second p-type active region and a second n-type active region in the second p-type well region and electrically connected to a second terminal of the clamp device. The n-type isolation structure is in a p-type region of a semiconductor substrate, and electrically isolates the first and second p-type well regions from the p-type substrate region. The clamp device further includes a blocking voltage tuning structure positioned between the first and second n-type active regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.