A Design of Neural Signal Sensing LSI with Multi-Input-Channels

Abstract

Small neural signal sensing systems with multi-input-channels are desired to observe a relationship between body actions of small animals and neural signals accurately in physiology and biology. In this work, we designed an analog multiplexer, chopper-stabilized amplifier and an analog-to-digital converter using an analog-digital mixed CMOS-LSI technology. The designed sensing LSI enables to measure ultimately small neural signals by a low-noise amplifier. It is possible to efficiently measure a neural signal by selecting the best channel that detects typical signal waveform.