Input common mode circuit for a fully differential amplifier
US8633765B2 · kind B2 · utility
1Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2011 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | May 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This application describes a system for minimizing the common mode voltage drift at the input of a fully differential amplifier. An impedance component is coupled to the inputs and outputs of the differential amplifier. The impedance component optimizes the common mode resistance or impedance to ground without significantly affecting the differential impedance, matches the input common mode voltage to the output common mode voltage and reduces the input common mode voltage drift in presence of leakage currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.