Switchable gain amplifier having a high-pass filter pole
US6906584B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2003 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Dec 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/502
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides a switchable gain amplifier comprising a high-pass filter pole. The switchable gain amplifier comprises first and second input nodes for receiving first and second components of a differential input signal. A first input terminal of a first differential amplifier is coupled to the first input node, and a first input terminal of a second differential amplifier is coupled to the second input node. A first variable resistance is coupled between the first input terminal of the first differential amplifier and a second input terminal of the first differential amplifier. A second variable resistance is coupled between the first input terminal of the second differential amplifier and a second input terminal of the second differential amplifier. A differential capacitor is coupled between the second input terminal of the first differential amplifier and the second input terminal of the second differential amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.