High Performance Digital Feedback for PWM Digital Audio Amplifiers

Midya P, Paulo T, Roeckner B. High Performance Digital Feedback for PWM Digital Audio Amplifiers. In: AES Convention 121. Audio Engineering Society; 2006. Paper 6862. Available from: https://aes.org/publications/elibrary-page/?id=13696

@inproceedings{Midya2006_13696,
  author = {Midya, Pallab and Paulo, Theresa and Roeckner, Bill},
  title = {{High Performance Digital Feedback for PWM Digital Audio Amplifiers}},
  booktitle = {AES Convention 121},
  note = {Paper 6862},
  year = {2006},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13696}
}

TY  - CPAPER
TI  - High Performance Digital Feedback for PWM Digital Audio Amplifiers
AU  - Midya, Pallab
AU  - Paulo, Theresa
AU  - Roeckner, Bill
T2  - AES Convention 121
M1  - Paper 6862
PY  - 2006
DA  - 2006/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13696
PB  - Audio Engineering Society
LA  - en
AB  - Non-idealities associated with the power stage of pulse width modulated (PWM) based, open loop digital audio amplifiers limit their performance. A high performance digital feedback system corrects for both power supply noise and power stage non-linearity in a PWM digital audio amplifier. An integrated circuit (IC) implementation of this system, along with measured results, is presented. The PWM amplifier, switching between 300 kHz and 400 kHz, achieves an unweighted dynamic range in excess of 100 dB, linearity in excess of 80 dB, and excellent power supply rejection (PSR) with a large scale audio signal.
ER  -