Circuit and method for automatically adjusting common mode rejection ratio
US6069533A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45212
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit and method for automatically adjusting a common mode rejection ratio. The circuit includes a mixing circuit for mixing two input signals received via first and second channel input terminals, eliminating noise from the input signals, and supplying a corresponding output signal; and a controller for simultaneously supplying a DC voltage having a predetermined level to the two channel input terminals when a main power source is initially applied, detecting the level of a voltage fed back from an output terminal of the mixing circuit, and controlling an output voltage level of the mixing circuit based on the detected voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.