Title :
A low-power low-noise amplifier for EEG/ECG signal recording applications
Author :
Jinghao Feng ; Yan, Na ; Min, Hao
Author_Institution :
ASIC & Syst. State Key Lab., Fudan Univ., Shanghai, China
Abstract :
This paper presents a low-power low-noise amplifier for electroencephalogram (EEG)/electrocardiogram (ECG) signal recording applications. The presented circuit contains a chopper-stabilized amplifier and a second-order continuous time Gm-C low pass filter (LPF) using very small Gm OTA. The circuit totally consumes 6.37μW with a single supply voltage of 1.2V. It achieves an AC gain of 40dB in mid-band, the input-referred integrated noise of 1.08μVrms (0.1Hz-150Hz) and a high common-mode rejection ratio (CMRR) of 130dB in bandwidth. This circuit is implemented in SMIC 0.13μm 1P8M CMOS process.
Keywords :
CMOS integrated circuits; choppers (circuits); continuous time filters; electrocardiography; electroencephalography; low noise amplifiers; low-pass filters; low-power electronics; operational amplifiers; EEG/ECG signal recording; Gm OTA; Gm-C low pass filter; SMIC 1P8M CMOS proces; chopper-stabilized amplifier; common-mode rejection ratio; electrocardiogram; electroencephalogram; gain 40 dB; low-power low-noise amplifier; power 6.37 muW; second-order continuous time filter; size 0.13 mum; voltage 1.2 V; Clocks; Electrocardiography; Electroencephalography; MOS devices; Modulation; Switches;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157143
