High-swing differential driver using low-voltage transistors
US8520348B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Feb 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4086
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A differential line driver with N-paralleled slices for driving an impedance-matched transmission line. Each driver slice is a modified H-bridge driver using low-voltage, high-speed transistors. By using a voltage-dropping first resistor in each slice, a high-voltage power supply that would normally damage the transistors can be used to power the driver and produce a differential output signal with peak-to-peak amplitudes that otherwise might not be possible. Each transistor in each driver slice has a resistor disposed between the transistor and the respective output node of the driver to enhance ESD protection of the transistors and, in combination with the first resistor, to impedance match the driver to the transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.