A 768-Channel CMOS Microelectrode Array With Angle Sensitive Pixels for Neuronal Recording

作者：Johnson Ben^*; Peace Shane T; Wang Albert; Cleland Thomas A; Molnar Alyosha

来源：IEEE Sensors Journal, 2013, 13(9): 3211-3218.

DOI：10.1109/JSEN.2013.2266894

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

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 mu V-rms over a 3.6 kHz bandwidth while occupying an area of only 800 mu m(2). Digitization is performed using a distributed ramp ADC that samples every sensor site at 10 kHz. The electrodes have a 50 mu 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.

• 出版日期2013-9