System design of a class-D audio power amplifier circuit with high-precision AGC control
Aiming at the problem of poor human auditory sensation caused by the wide range variation of audio signal amplitude, a high-precision and expandable automatic volume control circuit system is designed, which combines the software AGC circuit with the hardware AGC circuit, and is verified in the circuit system composed of MSPM0G3507 microcontroller and VCA810. The circuit system realizes high-precision, fast, and high-energy-ratio volume control through the adjustment of algorithms and circuit parameters, and at the same time has a certain degree of expandability and operability due to the presence of the microcontroller.
Authors
- G.-N. Lin (ORCID: https://orcid.org/0000-0002-9576-8156)
- Lin Ruan (ORCID: https://orcid.org/0000-0002-0951-5006)
- Jingshown Wu (ORCID: https://orcid.org/0000-0002-3765-0117)
Institutions
- Guilin University of Electronic Technology (CN)
Publication Details
- Published
- 2024-12-27
- DOI
- https://doi.org/10.1109/icctit64404.2024.10928578
- Primary Topic
- Advanced Power Amplifier Design
- Type
- article
- Field-Weighted Citation Impact
- 0.00