Unity-gain buffer with enhanced slew rate
US8933755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2013 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45248
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A unity-gain buffer includes an operational amplifier, a control stage, and an auxiliary output stage. The operational amplifier includes a non-inverting input terminal, an output terminal, and an inverting input terminal. The control stage is connected between the non-inverting input terminal and the output terminal of the unity-gain buffer. The auxiliary output stage is connected between the control stage and the output terminal of the unity-gain buffer. According to an input voltage at the input terminal of the unity-gain buffer, the control stage generates a first driving current, the auxiliary output stage generates a second driving current, and the operational amplifier generates a third driving current, so that an overall driving current outputted from the output terminal of the unity-gain buffer is equal to the sum of the first driving current, the second driving current and the third driving current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.