Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids

José Custòdio; Nuno Paulino; João Goes; Erik Bruun

doi:10.1109/ICECS.2008.4675051

Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids

José Custòdio, Nuno Paulino, João Goes, Erik Bruun

Centre for Physical Electronics

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal-to-noise-plus-distortion-ratio. As demonstrated through simulated results in which noise and mismatch effects are included, for the same over-sampling ratio, improvements in the order of 6-to-9 dB in the dynamic range can be achieved when comparing with the same topology employing linear-DACs.

Original language	English
Title of host publication	Proceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems
Publisher	IEEE
Publication date	2008
Pages	1107-1110
ISBN (Print)	14-24-42181-0
DOIs	https://doi.org/10.1109/ICECS.2008.4675051
Publication status	Published - 2008
Event	The IEEE International Conference on Electronics, Circuits and Systems - Malta Duration: 1 Jan 2008 → … Conference number: 15

Conference

Conference	The IEEE International Conference on Electronics, Circuits and Systems
Number	15
City	Malta
Period	01/01/2008 → …

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10.1109/ICECS.2008.4675051

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@inproceedings{1c57fe6554c647478a77aed9bad3286f,

title = "Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids",

abstract = "This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal-to-noise-plus-distortion-ratio. As demonstrated through simulated results in which noise and mismatch effects are included, for the same over-sampling ratio, improvements in the order of 6-to-9 dB in the dynamic range can be achieved when comparing with the same topology employing linear-DACs.",

author = "Jos{\'e} Cust{\`o}dio and Nuno Paulino and Jo{\~a}o Goes and Erik Bruun",

year = "2008",

doi = "10.1109/ICECS.2008.4675051",

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isbn = "14-24-42181-0",

pages = "1107--1110",

booktitle = "Proceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems",

publisher = "IEEE",

address = "United States",

note = "The IEEE International Conference on Electronics, Circuits and Systems, ICECS 2008 ; Conference date: 01-01-2008",

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Custòdio, J, Paulino, N, Goes, J & Bruun, E 2008, Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids. in Proceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems. IEEE, pp. 1107-1110, The IEEE International Conference on Electronics, Circuits and Systems, Malta, 01/01/2008. https://doi.org/10.1109/ICECS.2008.4675051

Multi-Bit Sigma-Delta Modulators with Enhanced Dynamic Range using Non-Linear DAC for Hearing Aids. / Custòdio, José; Paulino, Nuno; Goes, João; Bruun, Erik.

Proceedings of the 15th IEEE International Conference on Electronics, Circuits and Systems. IEEE, 2008. p. 1107-1110.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

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N2 - This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal-to-noise-plus-distortion-ratio. As demonstrated through simulated results in which noise and mismatch effects are included, for the same over-sampling ratio, improvements in the order of 6-to-9 dB in the dynamic range can be achieved when comparing with the same topology employing linear-DACs.

AB - This paper presents the possibility of employing non-linear low-resolution DACs in the feedback paths of multi-bit second-order Sigma-Delta modulators. The proposed technique is particularly attractive in applications such as hearing aids, requiring a very large dynamic range and medium signal-to-noise-plus-distortion-ratio. As demonstrated through simulated results in which noise and mismatch effects are included, for the same over-sampling ratio, improvements in the order of 6-to-9 dB in the dynamic range can be achieved when comparing with the same topology employing linear-DACs.

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