A 768-channel CMOS microelectrode array with angle sensitive pixels for neuronal recording

Ben Johnson, Shane T. Peace, Albert Wang, Thomas A. Cleland, Alyosha Molnar

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

This paper presents a CMOS sensor array with a 768 low-noise recording sites for neural recording with 2048 intercalated angle-sensitive pixels for optical read-out. The array is highly scalable because of electrode-level digitization with serial data stream-out. The front-end amplifiers use chopping to reduce flicker noise and achieve an input-referred noise of 4.1 μ V rms over a 3.6 kHz bandwidth while occupying an area of only 800 μm2. Digitization is performed using a distributed ramp ADC that samples every sensor site at 10 kHz. The electrodes have a 50 μ m pitch and are plated with platinum to increase the interface capacitance and ensure biocompatibility. The sensor array is used to refocus a lenless image and to record neural spiking and local field potentials from a mouse olfactory bulb slice.

Original languageEnglish
Article number6527330
Pages (from-to)3211-3218
Number of pages8
JournalIEEE Sensors Journal
Volume13
Issue number9
DOIs
StatePublished - 2013

Keywords

  • Action potential
  • angle-sensitive pixel (ASP)
  • CMOS sensors
  • local field potential
  • low-noise amplifiers
  • microelectrode array (MEA)
  • microelectrodes
  • neural interface

Fingerprint

Dive into the research topics of 'A 768-channel CMOS microelectrode array with angle sensitive pixels for neuronal recording'. Together they form a unique fingerprint.

Cite this