Monolithic solid state relay circuit for telecom wireline applications
US7990675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for utilizing a solid state relay arrangement as a part of a protection scheme for a telecom wireline card suitable are disclosed. According to one embodiment, a line card that is suitable for use in an optical network device includes an electrical port, a plurality of input lines, an output line, and protection circuitry. The protection circuitry switches or multiplexes the plurality of input lines into the output line, and includes a solid state relay arrangement and power isolation circuitry. The power isolation circuitry provides a high impedance to power rails associated with the solid state relay arrangement, and the solid state relay arrangement includes at least one N-channel field effect transistor (FET), at least one protection diode, and at least one charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.