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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2020 Feb 6;14(3):425–440. doi: 10.1109/TBCAS.2020.2972013

TABLE III.

Neural processor performance summary and comparison

Digital Signal Processor [45] [46] [47] This Work
Process (nm) 180 65 65 130
VDD (V) 1.8 0.54 0.27 1.0
fs (kHz) 30, 120, 240, 960 3200 480 80-640
Channel Number 1 128 16 1
Power Consumption (μW/channel) 148 0.175 4.68 9.5-52
Power Density (μW/mm2) 54.8 58.3 66.8 5.1-28.1
Circuit Area (mm2/channel) 2.7 0.003 0.07 1.85
Bit per Sample (bit) N/A 9 8 18
Median Clustering Accuracy 84.5% 72%-87% 75% (SNR=0dB-15dB) 80.8%-96.3% (SNR>2.5dB, Firing Rate>1Hz)
Signal Processing Capability Spike Detection, Feature Extraction, Clustering, Data Compression Spike Detection, Feature Extraction, Clustering, Data Compression Spike Detection, Clustering, Data Compression Data Decimation, Low-Pass Filtering, Band-Pass Filtering, Data Compression, EC-PC Spike Detection, Spiking Probability Mapping, Spike Firing Rate, Recording Bandwidth Adjustment