UM  > 微電子研究院
Low-Power CMOS Laser Doppler Imaging Using Non-CDS Pixel Readout and 13.6-bit SAR ADC
Chen D.G.1; Law M.-K.3; Lian Y.2; Bermak A.1
2016-02-01
Source PublicationIEEE Transactions on Biomedical Circuits and Systems
ISSN19324545
Volume10Issue:1Pages:186-199
Abstract

Laser Doppler imaging (LDI) measures particle flows such as blood perfusion by sensing their Doppler shift. This paper is the first of its kind in analyzing the effect of circuit noise on LDI precision which is distinctively different from conventional imaging. Based on this result, it presents a non-correlated-double-sampling (non-CDS) pixel readout scheme along with a high-resolution successive-approximation-register (SAR) analog-to-digital-converter (ADC) with 13.6b effective resolution (ER). Measurement results from the prototype chip in 0.18 μm technology confirm the theoretical analysis and show that the two techniques improve LDI sensing precision by 6.9 dB and 4.4 dB (compared to a 10b ADC) respectively without analog pre-amplification. The sensor's ADC occupies 518 μu × 84 μu and is suitable for fast column parallel readout. Its differential non-linearity (DNL), integral non-linearity (INL), and input referred noise are +3.0/-2.8 LSB, +24/-17 LSB, and 110 μV respectively, leading to a Figure-of-Merit (FoM) of 23 fJ/state which makes it one of the most energy efficient image sensor ADCs and an order of magnitude better than the best reported LDI system using commercial high-speed image sensors.

KeywordCmos Image Sensor Correlated Double Sampling (Cds) Flowmetry Laser Doppler Imaging (Ldi) Perfusion Successive-approximation-register Analog-to-digital-converter (Sar Adc) Time-domain Comparator
DOI10.1109/TBCAS.2014.2365515
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Biomedical ; Engineering, Electrical & Electronic
WOS IDWOS:000372008000017
Fulltext Access
Citation statistics
Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Corresponding AuthorChen D.G.; Law M.-K.; Lian Y.; Bermak A.
Affiliation1.Hong Kong University of Science and Technology
2.York University
3.Universidade de Macau
Recommended Citation
GB/T 7714
Chen D.G.,Law M.-K.,Lian Y.,et al. Low-Power CMOS Laser Doppler Imaging Using Non-CDS Pixel Readout and 13.6-bit SAR ADC[J]. IEEE Transactions on Biomedical Circuits and Systems,2016,10(1):186-199.
APA Chen D.G.,Law M.-K.,Lian Y.,&Bermak A..(2016).Low-Power CMOS Laser Doppler Imaging Using Non-CDS Pixel Readout and 13.6-bit SAR ADC.IEEE Transactions on Biomedical Circuits and Systems,10(1),186-199.
MLA Chen D.G.,et al."Low-Power CMOS Laser Doppler Imaging Using Non-CDS Pixel Readout and 13.6-bit SAR ADC".IEEE Transactions on Biomedical Circuits and Systems 10.1(2016):186-199.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen D.G.]'s Articles
[Law M.-K.]'s Articles
[Lian Y.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen D.G.]'s Articles
[Law M.-K.]'s Articles
[Lian Y.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen D.G.]'s Articles
[Law M.-K.]'s Articles
[Lian Y.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.