Device for converting a symmetrical signal into an asymmetrical signal
US6167284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Sep 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45471
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A converter device with a symmetrical device input and an asymmetrical device output has a transconductance input module that converts the device input voltage to an output current. A resistive module transforms the output current into a voltage referenced a predetermined potential. The transconductance input module has two transistors forming a differential pair and a subtracter connected between the differential pair outputs and the resistive module. The subtracter has three current mirrors and provides the resistive module with a current which is the difference between transfer currents of the two transistors of the differential pair. A second differential pair is provided between the device input and the first differential pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.