Potentiostat Array for Distributed Electrochemical Neural Recording

  title={Potentiostat Array for Distributed Electrochemical Neural Recording},
  author={A. Bandyopadhyay and G. Mulliken and Gert Cauwenberghs and Nitish V. Thakor},
A neurochemical sensor system is being developed to spatially sense and process neurotransmitters. This paper reports the design and VLSI implementation of a multichannel potentiostat that interfaces to a nitric-oxide (NO) sensor array. Picoampere to microampere input currents are range-normalized with programmable gain, and digitized by a bank of current-mode delta-sigma analog-to-digital (A/D) converters. First-order noise shaping and 4,096-fold oversampling provide high signal-to-noise ratio… CONTINUE READING
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