Title :
A 20 μW dual-channel analog front-end in 65nm CMOS for portable ECG monitoring system
Author :
Shuo Li;Nan Qi;Vahid Behravan;Zhiliang Hong;Patrick Y. Chiang
Author_Institution :
State Key Laboratory of ASIC & System, Fudan University, Shanghai 201203, China
Abstract :
This paper presents a dual-channel analog front-end (AFE) for portable ECG monitoring system. The AFE consists of an instrumentation amplifier, a DC servo loop (DSL), a fixed gain amplifier (FGA), a programmable gain amplifier (PGA) and an ADC buffer. To achieve high input impedance, a DC-coupled current feedback instrumentation amplifier (CFIA) is adopted. Fabricated in 65nm CMOS process, the AEF occupies 0.16mm2 area and consumes 20μW. Measurement results show that the AFE achieves 2.5GΩ input impedance, 73dB CMRR at 50Hz and 40/53.7dB tunable gain.
Keywords :
"Electrocardiography","Impedance","Bandwidth","Gain","DSL","Capacitors","Voltage measurement"
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.2015.7517095