1W 104dBA SNR Filterless Fully-Digital Class D Audio Amplifier with EMI Reduction Technique

Bassoli R, Crippa C, Guanziroli F, Nicollini G. 1W 104dBA SNR Filterless Fully-Digital Class D Audio Amplifier with EMI Reduction Technique. In: AES Convention 130. Audio Engineering Society; 2011. Paper 8351. Available from: https://aes.org/publications/elibrary-page/?id=15818

@inproceedings{Bassoli2011_15818,
  author = {Bassoli, Rossella and Crippa, Carlo and Guanziroli, Federico and Nicollini, Germano},
  title = {{1W 104dBA SNR Filterless Fully-Digital Class D Audio Amplifier with EMI Reduction Technique}},
  booktitle = {AES Convention 130},
  note = {Paper 8351},
  year = {2011},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15818}
}

TY  - CPAPER
TI  - 1W 104dBA SNR Filterless Fully-Digital Class D Audio Amplifier with EMI Reduction Technique
AU  - Bassoli, Rossella
AU  - Crippa, Carlo
AU  - Guanziroli, Federico
AU  - Nicollini, Germano
T2  - AES Convention 130
M1  - Paper 8351
PY  - 2011
DA  - 2011/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15818
PB  - Audio Engineering Society
LA  - en
AB  - A 1W filter-less power DAC featuring 104dBA SNR and EMI spreading is presented. Pre-distortion algorithms are used to reduce harmonic distortion inherent to the employed modulation process, and an oversampling noise shaper allows reducing modulator clock speed to facilitate hardware implementation while keeping high-fidelity quality. No analog circuits exist from I2S interface to speaker, leading to zero output offset and good efficiency even at medium/low power levels. 1.2V digital and 2.7V-5V output supplies are used. Active area is 0.94mm2 in a 0.13micron CMOS process. Total harmonic distortion at maximum level is about 0.2%.
ER  -