1:40 PM - 1:42 PM
[SO-PS-12-06] Low Quiescent Current Capacitively-coupled Chopper Instrumentation Amplifier in EEG Recording Wearable Devices for Compressed Sensing Framework
In a compressed sensing framework that utilizes frequency conversion as a dictionary, the noise spectrum has an impact on the accuracy of the reconstruction. Therefore, we designed a low-power capacitively-coupled chopper instrumentation amplifier (CCIA) for wearable electroencephalogram (EEG) recording devices is designed taking advantage of property of compressed sensing framework. The simulation results showed that the CCIA designed using a 180 nm CMOS process consumes a very low power of 0.382 μW, yet the NMSEcomp degradation of 30 frames of EEG signals can be reduced to only 0.087 by the simulation at compression ratio = 4.