Title
An event-driven SoC for neural recording.
Abstract
This paper presents a novel 64-channel ultra-low power/low noise neural recording System-on-Chip (SoC) featuring a highly reconfigurable Analogue Front-End (AFE) and block-selectable data-driven output. This allows a tunable bandwidth/ sampling rate for extracting Local Field Potentials (LFPs) and/or Extracellular Action Potentials (EAPs). Realtime spike detection utilises a dual polarity simple threshold to enable an event driven output for neural spikes (16-sample window). The 64-channels are organised into 16 sets of 4-channel recording blocks, with each block having a dedicated 10-bit SAR ADC that is time division multiplexed among the 4 channels. Each channel can be individually powered down and configured for bandwidth, gain and detection threshold. The output can thus combine continuous-streaming and event-driven data packets with the system configured as SPI slave. The SoC is implemented in a commercially-available 0.35 mu m CMOS technology occupying a silicon area of 19.1mm(2) (0.3mm(2) gross per channel) and requiring 32 mu W/channel power consumption (AFE only).
Year
Venue
Field
2016
PROCEEDINGS OF 2016 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS)
Computer science,Network packet,Sampling (signal processing),Communication channel,Electronic engineering,CMOS,Bandwidth (signal processing),Local field potential,Successive approximation ADC,Multiplexing
DocType
ISSN
Citations 
Conference
2163-4025
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Song Luan1114.85
Yan Liu23011.70
i n williams352.20
Timothy G. Constandinou47838.42