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.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
