Split voltage supply configuration with matched input load for single ended drivers
US9472921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2015 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/017518
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical transmitter driver is disclosed to drive a load with a drive signal responsive to a first and second input signal. The differential pair includes a first path having a first resistor connected to a first voltage supply and to a first transistor that receives the first input signal. A second path includes a second resistor connected to a second voltage supply and a second transistor. The first voltage supply is less than the second voltage supply. The second transistor has an input configured to receive the second input signal and the first and second input signals define a differential signal. Also part of this embodiment is a load connection node that presents the drive signal to the load. The first voltage supply is less than the second voltage supply. In one configuration cross coupled capacitor are connect between each input and the first path and second path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.