Differential high speed driver for low voltage operation
US5898297A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/242
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A driver includes first and second input terminals for receiving first and second input voltages, respectively, of a differential input signal, first and second switches coupled to the first and second input terminals, respectively, third and fourth switches coupled to the first and second input terminals, respectively, first, second, third and fourth current references coupled to the first, second, third and fourth switches, respectively, first second, third and fourth current mirrors coupled to the first, second, third and fourth current references, respectively, a first output terminal coupled to the first and third current mirrors, and a second output terminal coupled to the second and fourth current mirrors. When the first input voltage is less than the second input voltage, a first output current generated by the first and fourth current mirrors flows in a first direction between the output terminals, and when the first input voltage is greater than the second input voltage, a second output current generated by the second and third current mirrors flows in a second direction between the output terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.