Two multichannel integrated circuits for neural recording and signal processing.

Journal Article (Journal Article)

We have developed, manufactured, and tested two analog CMOS integrated circuit "neurochips" for recording from arrays of densely packed neural electrodes. Device A is a 16-channel buffer consisting of parallel noninverting amplifiers with a gain of 2 V/V. Device B is a 16-channel two-stage analog signal processor with differential amplification and high-pass filtering. It features selectable gains of 250 and 500 V/V as well as reference channel selection. The resulting amplifiers on Device A had a mean gain of 1.99 V/V with an equivalent input noise of 10 microV(rms). Those on Device B had mean gains of 53.4 and 47.4 dB with a high-pass filter pole at 211 Hz and an equivalent input noise of 4.4 microV(rms). Both devices were tested in vivo with electrode arrays implanted in the somatosensory cortex.

Full Text

Duke Authors

Cited Authors

  • Obeid, I; Morizio, JC; Moxon, KA; Nicolelis, MAL; Wolf, PD

Published Date

  • February 2003

Published In

Volume / Issue

  • 50 / 2

Start / End Page

  • 255 - 258

PubMed ID

  • 12665041

International Standard Serial Number (ISSN)

  • 0018-9294

Digital Object Identifier (DOI)

  • 10.1109/TBME.2002.807643


  • eng

Conference Location

  • United States