Circuitry for biasing amplifiers
US8405460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2011 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/30021
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Integrated circuits with amplification circuitry are provided. The amplification circuitry may have an input terminal, an output terminal, a positive power supply terminal, and a ground terminal. The amplification circuitry may include first, second, and third stages. The first stage may provide biasing for the second stage. The second stage may provide biasing for the third stage. The second stage may provide paths for conveying an input signal from the input terminal to the third stage. The second stage may bias the amplifier to have low quiescent current and low shoot-through current. The second stage may prevent PVT variations such as supply voltage variations from affecting the quiescent current and shoot-through current of the amplifier. To increase the high-frequency response of the amplifier, capacitors may be added to the paths for conveying the input signal from the input terminal to the third stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.