Title :
A 1.6uW Gm-C coninuous-time sigma-delta modulator with increasing linearity technology for bio-signal acquisitions
Author :
Chih-Pei Hsueh ; Ming-Chun Liang ; Jia-Hua Hong ; Shuenn-Yuh Lee
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chai-Yi, Taiwan
Abstract :
This paper present a low-pass sigma delta modulator (LPSDM), which can be used for electroencephalogram (EEG) or electrocardiogram (ECG) signal acquisition systems. The LPSDM is implemented in continuous time Gm-C architecture and the systematic design flow is introduced. The power consumption of LPSDM is 1.614uW. According to the post-layout simulation under the bandwidth of ECG, a signal-to-noise and harmonic distortion ratio (SNDR) of 57.9 dB can be achieved.
Keywords :
biomedical electronics; biomedical equipment; continuous time systems; data acquisition; electrocardiography; electroencephalography; low-power electronics; medical signal detection; medical signal processing; sigma-delta modulation; ECG bandwidth; ECG signal acquisition systems; EEG signal acquisition systems; Gm-C coninuous-time sigma-delta modulator; LPSDM power consumption; SNDR; biosignal acquisitions; electrocardiogram; electroencephalogram; harmonic distortion ratio; linearity technology; low-pass sigma delta modulator; post-layout simulation; power 1.6 muW; power 1.614 muW; signal-to-noise ratio; systematic design flow; Bandwidth; Electrocardiography; Electroencephalography; Mathematical model; Modulation; Noise; Transconductance; Gm-C integrator; biomedical signal; continuous-time; low power; sigma-delta modulator; subthreshold;
Conference_Titel :
Bioelectronics and Bioinformatics (ISBB), 2014 IEEE International Symposium on
Conference_Location :
Chung Li
Print_ISBN :
978-1-4799-2769-2
DOI :
10.1109/ISBB.2014.6820920
