Title :
Networked electrophysiology sensor-on-a-chip
Author :
Chen, Tsai ; McNeill, John
Author_Institution :
Dept. of Electr. & Comput. Eng., Worcester Polytech. Inst., Worcester, MA, USA
Abstract :
This paper presents the design of a mixed-signal integrated circuit (IC) prototype to provide complete, programmable signal conditioning and analog-to-digital conversion of an electrophysiologic signal. A front-end amplifier is designed with low input referred noise 1 μVrms, and common mode rejection ratio 102 dB. A novel second order sigma-delta (ΣΔ) analog-to-digital converter (ADC) is used to program the low-frequency cutoff, and to enable an input common mode range of ±0.3 V. The overall system is implemented and simulated in Jazz Semiconductor 0.18 μm CMOS technology with power consumption 5.8 mW.
Keywords :
CMOS integrated circuits; analogue-digital conversion; bioelectric potentials; biomedical electronics; detector circuits; mixed analogue-digital integrated circuits; signal conditioning circuits; ADC; CMOS technology; analog-to-digital conversion; electrophysiologic signal; front-end amplifier; mixed-signal integrated circuit prototype; networked electrophysiology sensor-on-a-chip; power 5.8 mW; programmable signal conditioning; sigma-delta converter; size 0.18 mum; voltage 0.3 V; Cutoff frequency; Electroencephalography; Radiation detectors; Signal to noise ratio; Transfer functions;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944029
