An integrated multi-channel system for biomedical signal acquisition

Publikationstyp
Conference Paper
Publikationsdatum
2011
Sprache
English
Author
Tomasik, Jakob M. 
Galjan, Wjatscheslaw 
Hafkemeyer, Kristian M. 
Schröder, Dietmar 
Krautschneider, Wolfgang 
Institut
Integrierte Schaltungen E-9 
TORE-URI
http://hdl.handle.net/11420/14940
Start Page
36
End Page
45
Citation
BIODEVICES 2011 : proceedings of the International Conference on Biomedical Electronics and Devices ; Rome, Italy, January 26 - 29, 2011: 36-45 (2011)
Contribution to Conference
International Conference on Biomedical Electronics and Devices, BIODEVICE 2011 
Scopus ID
2-s2.0-79960174822
Publisher
SciTePress
A CMOS configurable system-on-chip (SoC) for biomedical signal acquisition is described. The SoC is composed of 10 channels, each channel including a programmable analog front-end (AFE) and a 20 bit analog-to-digital converter (ADC). The digitized signals are read out via a high-speed serial communication bus. The AFE includes a common-mode rejection ratio (CMRR) calibration circuitry resulting in a CMRR of more than 80 dB and an active DC-suppression circuitry giving the DC-coupled instrumentation amplifier the possibility to tolerate DC-offsets of up to ± 1 V for a power supply voltage of 3.3 V. In low-noise mode the AFE achieves an input referred noise of less than 50 nVrms for EEG application (0.5-70 Hz) and the power consumption of a channel including AFE and ADC is less than 5 mW in low-power mode. A prototype has been fabricated in a 0.35 μm CMOS process.
Schlagworte
Biomedical signals
CMRR-calibration
Configurable
DC-suppression
Low-noise
Low-power
SoC
DDC Class
570: Biowissenschaften, Biologie