| IP개요 |
This paper presents a channel low noise neural signal amplifier for the low power wireless sensor network. A channel includes pre-amplifier,a programmable gain amplifier, low pass filter, analog-digital converter, and RF transmission block. In this proposed we realize low noise amplifier to optimize the noise performance of channel. The chopper technique is used to reduce 1/f noise. In addition, a DC offset cancelling loop is employed to suppress electrode offset. While another active loop is ripple rejection loop. It is used to reduce intrinsic offset which is caused by mismatch process. |
