In multi-bit delta-sigma digital-to-analog converters (DACs), the distortion from physical element mismatch can be spectrally shaped using dynamic element matching (DEM). A problem with all DEM schemes is that the complexity increases very rapidly with the number of levels in the DAC. To reduce DEM complexity for DACs with many bits, DEM segmentation using a dedicated segmentation delta-sigma modulator (DSM) has previously been suggested. Published segmentation-DSMs have usually been first-order error feedback designs, to maximize the DEM complexity reduction and to minimize the analog overhead. In this paper high-order segmentation-DSMs will be investigated and improved solutions proposed.

Authors: Løkken, Ivar; Sæther, Trond; Vinje, Anders
Affiliation: Norwegian University of Science and Technology
AES Conference: 31st International Conference: New Directions in High Resolution Audio (June 2007)
Paper Number: 8
Publication Date: June 1, 2007
Subject: High Resolution Audio

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.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

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.