A 155µW 88-dB DR discrete-time ΔΣ modulator for digital hearing aid applications

S. Porrazzo, A. Morgado, D. San Segundo Bello, F. Cannillo, C. Van Hoof, A.H.M. Roermund, van, E. Cantatore

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)
2 Downloads (Pure)

Abstract

In this paper we present a low-power switched-capacitor In this paper we present a low-power switched-capacitor ¿S modulator for digital hearing-aid applications. The circuit adopts a novel summing successive approximation (SAR) block to perform multi-bit quantization together with the analog addition that is required in feed-forward topologies. The use of passive addition and SAR operation helps in reducing the complexity and power consumption of the modulator. The prototype is implemented in a 180 nm CMOS technology and measurements demonstrate 88 dB of dynamic range in a 10 kHz band while consuming 155µW from a 1.8V supply.
Original languageEnglish
Title of host publicationProceedings of the 2012 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2012, 28-30 November 2012, Hsinchu, Taiwan
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages248-251
ISBN (Print)978-1-4673-2292-8
DOIs
Publication statusPublished - 2012
Eventconference; 2012 BIOCAS Biomedical Circuits and Systems Conference; 2012-11-28; 2012-11-30 -
Duration: 28 Nov 201230 Nov 2012

Conference

Conferenceconference; 2012 BIOCAS Biomedical Circuits and Systems Conference; 2012-11-28; 2012-11-30
Period28/11/1230/11/12
Other2012 BIOCAS Biomedical Circuits and Systems Conference

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