MOS transistors substitute circuit having a transformer/data interface function, particularly for ISDN networks and corresponding control and driving switch configuration
US6560333B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1998 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Sep 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a MOS transistors substitutive circuit having a transformer/data interface function, in particular for ISDN networks, comprising first (11a) and second (11b) power supply/transmitter blocks, the first power supply/transmitter block (11a) being connected between a voltage reference (V) and a first data interface (RX), and the second power supply/transmitter block (11b) being connected between a ground potential reference (GND) and a second data interface (TX), both power supply/transmitter blocks being connected to a supply voltage reference (VDD). The MOS transistors substitutive circuit according to the invention comprises first (12) and second (12′) MOS transistor pairs connected to the voltage reference (V), the MOS transistors being diode configured and held in their saturation range, so as to have a high A.C. impedance and virtually zero D.C. impedance, thereby minimizing power dissipation through the substitutive circuit.The invention also concerns a control and driving switch configuration for a network termination of at least first (11) and second (11′) MOS transistors substitutive circuits according to the invention, operating respectiv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.