A signal-specific approach for reducing SAR-ADC power consumption

Ken Chia Han Chiang, N. Sertac Artan, H. Jonathan Chao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel power optimization technique, called adaptive tracking is proposed in this paper for successive approximation analog-to-digital converters aiming implantable device applications. A SAR-ADC can easily be equipped with the proposed tracking technique by a minor modification in its digital circuitry (SAR). This work relies on the similarity of consecutive sample values in band-limited bio-potentials. The proposed adaptive tracking scheme can reduce power consumption of a wide variety of SAR-ADCs. In particular, we show that the tracking scheme can save 30% of power in a conventional SAR-ADC, 31% of power in those using binary SAR-ADCs using a weighted DAC with split MSB capacitor, and 8% of power in those using charge sharing DAC.

Original languageEnglish (US)
Title of host publication2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
Pages278-281
Number of pages4
DOIs
StatePublished - 2013
Event2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013 - Rotterdam, Netherlands
Duration: Oct 31 2013Nov 2 2013

Other

Other2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
CountryNetherlands
CityRotterdam
Period10/31/1311/2/13

Fingerprint

Digital to analog conversion
Electric power utilization
Capacitors

Keywords

  • ADC
  • analog signals
  • SAR
  • tracking

ASJC Scopus subject areas

  • Hardware and Architecture
  • Biomedical Engineering
  • Electrical and Electronic Engineering

Cite this

Chiang, K. C. H., Artan, N. S., & Chao, H. J. (2013). A signal-specific approach for reducing SAR-ADC power consumption. In 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013 (pp. 278-281). [6679693] https://doi.org/10.1109/BioCAS.2013.6679693

A signal-specific approach for reducing SAR-ADC power consumption. / Chiang, Ken Chia Han; Artan, N. Sertac; Chao, H. Jonathan.

2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013. 2013. p. 278-281 6679693.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chiang, KCH, Artan, NS & Chao, HJ 2013, A signal-specific approach for reducing SAR-ADC power consumption. in 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013., 6679693, pp. 278-281, 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013, Rotterdam, Netherlands, 10/31/13. https://doi.org/10.1109/BioCAS.2013.6679693
Chiang KCH, Artan NS, Chao HJ. A signal-specific approach for reducing SAR-ADC power consumption. In 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013. 2013. p. 278-281. 6679693 https://doi.org/10.1109/BioCAS.2013.6679693
Chiang, Ken Chia Han ; Artan, N. Sertac ; Chao, H. Jonathan. / A signal-specific approach for reducing SAR-ADC power consumption. 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013. 2013. pp. 278-281
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