Differential amplifier arrangement
US7327190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2004 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Aug 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45588
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuitry for use in a differential amplifier includes an input stage having a first differential amplifier and an offset compensation stage that includes at least one controllable current source. The offset compensation stage is connected to a bias input of the first differential amplifier. The circuitry includes an output stage having a second differential amplifier, where the output stage is after an output of the input stage, and a programmable resistor network for controlling an amplification of the input stage. The programmable resistor network controls the amplification in accordance with a feedback from the first differential amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.