Multi-input differential amplifier with dynamic transconductance compensation
US8643437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2012 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Apr 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3211
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-input differential amplifier with dynamic transconductance compensation is disclosed. The multi-input differential amplifier includes an input stage, an output stage and a transconductance compensation circuit. The input stage includes a plurality of differential input pairs, which includes a first differential input pair, a second differential input pair, a third differential input pair and a fourth differential input pair, for generating a pair of differential signals according to a first input signal, a second input signal, a third input signal, a fourth input signal, and an output signal. The output stage is utilized to generate the output signal in response to the pair of differential signals. The transconductance compensation circuit is coupled between the first and the second differential input pair, for compensating a first transconductance of the first differential input pair and a second transconductance of the second differential input pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.