An 8μW heterodyning chopper amplifier for directextraction of 2μVrms heuronal biomarkers

Tim Denison, Wes Santa, Randy Jensen, Dave Carlson, Gregory Molnar, Al Thaddeus Avestruz

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

9 Scopus citations

Abstract

A chopper architecture using heterodyne frequency selection provides both amplification and flexible bandpower extraction of neural signals. The bandpass center frequency is tunable from DC to 500Hz and the filter BW is programmable from 5 to 25Hz using an on-chip 3rd-order LPF. The filter configuaration is stored in on-chip non-volatile memory. The 2μV rms noise floor for a 10Hz band enables detection of key biomarkers. The "brain radio" including amplifiers, clocks and multipliers consumes 8μW from a 2V supply.

Original languageEnglish (US)
Title of host publication2008 IEEE International Solid State Circuits Conference - Digest of Technical Papers, ISSCC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages162-164
Number of pages3
ISBN (Print)9781424420100
DOIs
StatePublished - 2008
Event2008 IEEE International Solid State Circuits Conference, ISSCC - San Francisco, CA, United States
Duration: Feb 3 2008Feb 7 2008

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume51
ISSN (Print)0193-6530

Other

Other2008 IEEE International Solid State Circuits Conference, ISSCC
CountryUnited States
CitySan Francisco, CA
Period2/3/082/7/08

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