A Non Standard Op-Amp Based Mic Preamp Design Meets Studio Quality Noise Requirements

Kovinic M. A Non Standard Op-Amp Based Mic Preamp Design Meets Studio Quality Noise Requirements. In: AES Convention 82. Audio Engineering Society; 1987. Paper 2470. Available from: https://aes.org/publications/elibrary-page/?id=4959

@inproceedings{Kovinic1987_4959,
  author = {Kovinic, Milan},
  title = {{A Non Standard Op-Amp Based Mic Preamp Design Meets Studio Quality Noise Requirements}},
  booktitle = {AES Convention 82},
  note = {Paper 2470},
  year = {1987},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=4959}
}

TY  - CPAPER
TI  - A Non Standard Op-Amp Based Mic Preamp Design Meets Studio Quality Noise Requirements
AU  - Kovinic, Milan
T2  - AES Convention 82
M1  - Paper 2470
PY  - 1987
DA  - 1987/03/06
UR  - https://aes.org/publications/elibrary-page/?id=4959
PB  - Audio Engineering Society
LA  - en
AB  - Contemporary transformerless mic preamp design frequently utilizes a state-of-the-art monolithic op-amp supplemented with the descrete input stage. This approach does provide an answer to op-amp's inherent noise problems, but it also violates some of its indispensible properties which opens a number of problems of different nature. The non-standard approach proposed in this paper however, copes with this problem by taking advantage of summation of the uncorrelated noise of n parallel conventional co-amps. This yields a substantial noise reduction, still retaining all of the op-amp's key features intact. Another advantage of this approach is statistical matching of some op-amp's properties thus making selecting obsolete, which can also be suitable for a higher volume production. The paper includes theoretical background with evaluation of some practical implications.
ER  -