A new Digital-to-analogue converter (in a .18 micron process) will be presented which exhibits exceptionally large linearity (Total Harmonic Distortion < -118 dB at full scale input) and a very good signal-to-noise (SNR) performance (> 120 dB SNR, unweighted). Targeted as a DAC to meet the Super Audio CD specifications, the DAC is designed as a n-bit (n = 4,5, or 6) switched current Sigma Delta modulator, running at a sample rate of 2.8 or 5.6 MHz. While the SNR is obtained by standard but carefully applied design techniques, the linearity of the DAC is obtained by a new Dynamic Element Matching (DEM) technique. Contrary to existing DEM approaches, the DEM technique fully removes any error due to mismatch in the switched current sources, instead of spectrally shaping the error. The new DEM technique will be explained in detail, and measurement results will be given.

Authors: Reefman, Derk; van den Homberg, John; van Tuijl, Ed; Bastiaansen, Corne; van der Dussen, Leon
Affiliations: Philips Research, Eindhoven, The Netherlands ; Philips Semiconductors, Eindhoven,The Netherlands(See document for exact affiliation information.)
AES Convention: 114 (March 2003) Paper Number: 5846
Publication Date: March 1, 2003
Subject: Signal Processing

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.