A current mode CMOS IC for biological signals measurement in noisy environment

This paper describes a novel fully integrated circuit implemented in standard 0.35 ¿m CMOS technology dedicated to biological signal measurement such as ECG or EEG signals. Based on a new CMOS current conveyor (a low power 60 ¿A @ ±1.5 V power supply, 88 × 100 ¿m 2 area, 100 MHz bandwidth and 10 GHz...

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Bibliographic Details
Main Authors: Ayachi, M., Lingchuan Zhou, Blonde, J.-P.
Format: Conference Proceeding
Language:English
Subjects:
Chopper stabilized amplifier
CMOS
CMOS integrated circuits
CMOS technology
Current conveyor
Current measurement
Instrumentation amplifier
Instruments
Integrated circuit measurements
Integrated circuit noise
Integrated circuit technology
Measurement standards
Voltage
Working environment noise
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Summary:This paper describes a novel fully integrated circuit implemented in standard 0.35 ¿m CMOS technology dedicated to biological signal measurement such as ECG or EEG signals. Based on a new CMOS current conveyor (a low power 60 ¿A @ ±1.5 V power supply, 88 × 100 ¿m 2 area, 100 MHz bandwidth and 10 GHz equivalent GBW circuit) the instrumentation amplifier used in this IC has a weaker offset and a better CMRR than its equivalent in Voltage mode. In order to totally cancel output offset Voltage and reduce noise, the input signal and output signal of the instrumentation amplifier are chopped at high frequency. The size and the architecture of this IC make biological signal measurement in very hostile environment such MRI, possible.
ISSN:2159-1660
DOI:10.1109/ICM.2008.5393529