Article ID Journal Published Year Pages File Type
4337159 Journal of Neuroscience Methods 2006 6 Pages PDF
Abstract

A 0.35 μm CMOS integrated circuit for multi-channel neuronal recording with twelve true-differential channels, band separation and digital offset calibration is presented. The measured signal is separated into a low-frequency local field potential and high-frequency spike data. Digitally programmable gains of up to 60 and 80 dB for the local field potential and spike bands are provided. DC offsets are compensated on both bands by means of digitally programmable DACs. Spike band is limited by a second order low-pass filter with digitally programmable cutoff frequency. The IC has been fabricated and tested. 3 μV input referred noise on the spike data band was measured.

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