Differential amplifier, reference voltage generating circuit, differential amplifying method, and reference voltage generating method
US8031001B2 · kind B2 · utility
8Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2009 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Dec 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45674
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential amplifier includes a main differential amplifier circuit that receives a pair of input signals and supplies a pair of output signals based on a difference between the input signals; and a bias control differential amplifier circuit that receives the pair of output signals, controls a control terminal of a current-limiting transistor making up the main differential amplifying circuit based on an offset voltage included in the output signals, and reduces the offset voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.