Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Ultra low power Analog-to-Digital Converter for Biomedical Devices
KTH, School of Information and Communication Technology (ICT).
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The biomedical devices often operate only with a battery, e.g., blood glucose monitor, pacemaker. Therefore, it is desirable to fully utilize the energy without sacrificing the performance of the system. The Analog-to-Digital Converter (ADC), as a key component of most of the biomedical devices, needs to be designed for minimum power consumption by exploring various techniques from system level to circuit level. In addition, the nature of bio-signal provides more alternatives to reduce the power.

In this thesis work, an 8 bit 11 kS/s modified algorithmic analog-to-digital converter for biomedical applications is proposed. All analog components are designed at circuit level using a 90 nm CMOS technology and digital components are implemented using Verilog-A language in Cadence. The ADC is operating in current mode at sub-threshold region with only 0.5 V supply voltage with an input current from 0 nA to 512 nA. The ADC is designed based on a top-down design with bottom-up verification approach. The system level model is described using top level language and then the circuit level is created and verified using Cadence tools according to the system level model.

The INL and DNL obtained from simulation is -1/+0.8 LSB and -0.9/+1 LSB respectively. The SNDR is 47 dB (7.5 ENOB) for a -0.2 dBFS at 1 kHz sinusoidal signal. The power consumption is 2.83 μW without biasing and 4μW with biasing.

Place, publisher, year, edition, pages
2011. , 79 p.
Series
Trita-ICT-EX, 219
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-44790OAI: oai:DiVA.org:kth-44790DiVA: diva2:451354
Subject / course
Electronic- and Computer Systems
Educational program
Master of Science - System-on-Chip Design
Uppsok
Technology
Examiners
Available from: 2011-10-25 Created: 2011-10-25 Last updated: 2011-10-25Bibliographically approved

Open Access in DiVA

fulltext(2287 kB)2226 downloads
File information
File name FULLTEXT01.pdfFile size 2287 kBChecksum SHA-512
e492437a716d05f31c40cdabc3070764dcb7c9614f62ce6926d60791afbcec6f1fcc82f3600305d9855d54bf0b88246f573b093db1a535037d55ef31b1dca7b8
Type fulltextMimetype application/pdf

By organisation
School of Information and Communication Technology (ICT)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 2226 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 302 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf