DocumentCode :
1797012
Title :
A 0.5-V sub-μW/channel neural recording IC with delta-modulation-based spike detection
Author :
Seong-Jin Kim ; Lei Liu ; Lei Yao ; Wang Ling Goh ; Yuan Gao ; Minkyu Je
Author_Institution :
Inst. of Microelectron., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore
fYear :
2014
fDate :
10-12 Nov. 2014
Firstpage :
189
Lastpage :
192
Abstract :
A neural recording IC with a new spike detection scheme is proposed to minimize power dissipation while preserving the waveform information of the detected spikes. A delta modulator is employed in the recording IC to reduce signal dynamic range and enable low-voltage operation. A series of output values from the delta modulator are stored in a small amount of analog memory to extract two key features of the neural signal - amplitude and frequency, which are used for accurate spike detection. Using the stored delta values, the precise spike waveform information can be conserved. A prototype recording IC with 16 channels has been fabricated using 0.18-μm CMOS technology. Measurement results demonstrate the spike detection capability successfully. The fabricated IC consumes only 0.88 μW/channel at 0.5-V supply.
Keywords :
CMOS integrated circuits; analogue storage; bioelectric potentials; biomedical electronics; delta modulation; neural chips; CMOS technology; analog memory; channel neural recording IC; delta modulator; delta-modulation-based spike detection; power 0.88 muW; power dissipation; size 0.18 mum; voltage 0.5 V; Detectors; Dynamic range; Feature extraction; Frequency modulation; Integrated circuits; Solid state circuits; analog memory; delta modulator; low power; low voltage; neural recording; spike detection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2014 IEEE Asian
Conference_Location :
KaoHsiung
Print_ISBN :
978-1-4799-4090-5
Type :
conf
DOI :
10.1109/ASSCC.2014.7008892
Filename :
7008892
Link To Document :
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