A Multi-bit Delta-Sigma DAC with Mismatch Shaping in the Feedback Loop

Duewer B, Yi H, Melanson J. A Multi-bit Delta-Sigma DAC with Mismatch Shaping in the Feedback Loop. In: AES Convention 115. Audio Engineering Society; 2003. Paper 5919. Available from: https://aes.org/publications/elibrary-page/?id=12392

@inproceedings{Duewer2003_12392,
  author = {Duewer, Bruce and Yi, Heling and Melanson, John},
  title = {{A Multi-bit Delta-Sigma DAC with Mismatch Shaping in the Feedback Loop}},
  booktitle = {AES Convention 115},
  note = {Paper 5919},
  year = {2003},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12392}
}

TY  - CPAPER
TI  - A Multi-bit Delta-Sigma DAC with Mismatch Shaping in the Feedback Loop
AU  - Duewer, Bruce
AU  - Yi, Heling
AU  - Melanson, John
T2  - AES Convention 115
M1  - Paper 5919
PY  - 2003
DA  - 2003/10/06
UR  - https://aes.org/publications/elibrary-page/?id=12392
PB  - Audio Engineering Society
LA  - en
AB  - A robust new architecture for multi-bit delta-sigma data converters is presented. The second order mismatch shaping function is moved inside the feedback loop of a high order modulator, replacing the need for dynamic element matching (DEM) after the modulator. The mismatch shaper makes a trade-off between ensemble quantization error and mismatch induced error. Mismatch error in the frequencies of interest is decreased, and the resulting additional quantization error is dealt with by the delta-sigma feedback loop. This approach allows good non-tonal noise shaping performance even in the face of severe element mismatch. The modulator reliably collapses to second order to maintain stability if faced with particularly high noise energy. The modulator also has integrated SACD processing.
ER  -