Driver circuit and test apparatus
US8368366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2009 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Sep 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided is a driver circuit that outputs, from an output end, an output signal corresponding to an input signal supplied thereto, comprising an output resistance section that is provided between a constant voltage source and the output end; an output switching section that switches voltage of the output end according to the input signal; and a switching section that switches a resistance value of the output resistance section. The output resistance section includes an output resistance FET having a source/drain connection between the constant voltage source and the output end, and the switching section supplies a control voltage to a gate of the output resistance FET such that the resistance between the source and the drain of the output resistance FET switches to a designated value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.