Abstract
The paper presents the design and test results of a novel circuit with dual band-pass filter for simultaneous recording of Local Filed Potentials and spikes from individual neurons. Single readout channel is built of an input AC-coupling circuit with the cut-off frequency below 0.1Hz, a low noise preamplifier and two parallel band-pass filters with nominal bandwidths from 2Hz to 100Hz and from 200Hz to 2kHz. The design is optimized for low noise, high dynamic range, and low power dissipation. The circuit has been designed and manufactured in a 0.35μm CMOS process as a multichannel chip comprising also an analog multiplexer for serialization of the analog output signals.
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