High-speed closed loop switch and method for video and communications signals
US6504419B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Apr 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/6257
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for multiplexing a selected one of a plurality of input signals to an output conductor includes a plurality of diamond follower input buffers each having an input terminal coupled to receive an input signal, respectively. A diamond follower output buffer has an output coupled to the output conductor. A feedback resistor is coupled between the output conductor and the outputs of the input buffers. A first current mirror has a control input coupled to a first current bias terminal of each input buffer, and a second current error has a control input coupled to a second current bias terminal of each input buffer. The first and second current mirrors have outputs connected to drive the input of the output buffer and bias current terminals of the output buffer to provide a high slew rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.