A digitally-assisted sensor interface for biomedical applications
Author(s)
Bohorquez, Jose L.; Yip, Marcus; Chandrakasan, Anantha P.; Dawson, Joel L.
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Acompact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and digital design to reduce system area and power, while making the system more robust to interferers. Anti-aliasing is achieved using a charge-sampling filter with a sinc frequency response and programmable gain. A mixed-signal feedback loop creates a sharp, programmable notch for interference cancelation. A prototype was implemented in 0.18 μm CMOS and the on-chip blocks consume a total of 255 nW - 2.5 μW from a 1.5 V supply depending on noise and bandwidth requirements.
Date issued
2010-06Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Microsystems Technology LaboratoriesJournal
2010 IEEE Symposium on VLSI Circuits (VLSIC)
Publisher
Institute of Electrical and Electronics Engineers
Citation
Bohorquez, Jose L. et al. “A Digitally-assisted Sensor Interface for Biomedical Applications.” Technical Digest of Technical Papers, 2010 IEEE Symposium on VLSI Circuits (VLSIC), IEEE, 2010. 217–218. Web.© 2010 IEEE.
Version: Final published version
Other identifiers
INSPEC Accession Number: 11520191
ISBN
978-1-4244-5454-9
978-1-4244-7641-1