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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Guocheng Huang Tao Yin Qisong Wu Yuanming Zhu Haigang Yang |
| Copyright Year | 2015 |
| Description | Author affiliation: Inst. of Electron., Beijing, China (Guocheng Huang; Tao Yin; Qisong Wu; Yuanming Zhu; Haigang Yang) |
| Abstract | This paper presents a low noise chopper-stabilized instrumentation amplifier (IA) for EEG recording. The current-reuse technology is adopted to reduce noise of the IA and the regulated cascode circuit is used to boost the open-loop gain of the amplifier. A ripple reduction loop (RRL) based on a novel output-resistance-tuning technology is proposed to reduce the intrinsic offset of the IA and reduce the output ripple of the chopper amplifier. Simulation results show the high-pass cutoff frequency of 0.15Hz, the input referred noise of $0.7μV_{RMS}$ (BW=100Hz) and a NEF of 2.83. The attenuation to the chopping ripple is about 35dB with the novel output-resistance-tuning based RRL. The proposed IA achieves an average CMRR of 110dB, average PSRR of 105dB and average input-impedance of 1.5GΩ from Monte Carlo analysis. The overall IA consumes only 1.1μA current at a 1.2V supply. |
| Starting Page | 2624 |
| Ending Page | 2627 |
| File Size | 860462 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479983919 |
| DOI | 10.1109/ISCAS.2015.7169224 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Noise Electroencephalography Instruments Electrodes Choppers (circuits) Monte Carlo methods Impedance output-resistance-tuning chopper-stabilized EEG instrumentation amplifier current-reuse ripple reduction |
| Content Type | Text |
| Resource Type | Article |
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