Dynamic range boost for amplifiers
US12334950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2022 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Mar 21, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Examples of amplifiers and associated control blocks control analog and digital gains of such an amplifier to maintain a ripple voltage at the input/virtual terminals of an internal integrator below an upper limit. Such an example amplifier comprises digital and analog processing blocks. The digital processing block receives a digital audio signal and also includes a digital gain component. The analog processing block includes an analog gain component and an output stage having a supply voltage terminal. A boost controller receives the digital audio signal, and has a digital output and a boost voltage output to output a boost voltage. A digital controller receives the digital audio signal, and has a first digital input coupled to the digital output of the boost controller and a second digital input to receive a measurement value indicative of the outputted boost voltage. Based on its inputs, the digital controller controls the digital and analog gain components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.