Title :
A 1.2-V 7.2-μw ECG AFE with continuous time self-calibration filters
Author :
Feng Huang;Ke Lin;Fang Gao;Chen Chen;Haibin Shao;Bo Wang
Author_Institution :
The Key Lab of IMS, School of ECE, Peking University Shenzhen Graduate School, Shenzhen, China
Abstract :
This paper presents a 1.2 V low-power low-noise analog front end circuit for electrocardiogram (ECG) applications. The proposed system architecture is optimized to achieve a better trade-off between power consumption and noise figure. A low noise instrumentation amplifier with tunable pseudo-resistor, a programmable gain stage, and a low-pass Gm-C filter are adopted. For the purpose of the accurate cut-off frequency of the low-pass filter, a novel self-calibration circuit is employed. The AFE consumed 7μW and 0.5~100Hz input-referred integrated noise is 4.5 μVrms in a 0.13 μm CMOS technology.
Conference_Titel :
ASIC (ASICON), 2015 IEEE 11th International Conference on
Print_ISBN :
978-1-4799-8483-1
Electronic_ISBN :
2162-755X
DOI :
10.1109/ASICON.2015.7517089