2Hermini A H, Cliquet A Jr. A methodology for evaluating electromagnetic interference on medical equipment used in electrosurgical procedures[J]. Journal of Clinical Engineering, 2000,25(2):112-118.
3Milani D L.Protection of ECG monitor against electrical surgical interference. U. S. Patent, 1989(4):800-894.
4Summervile T, Isolation amps hike accuracy and reliability. Isolation Amplifiers Protect Critical Circuitry From Damage and Enhance Performance
5Oliaei,Olmid, Sigme-delta modulator with spectrally shaped feedback[J], IEEE Transactions on Circuits and Systems II" Analog and Digital Signal Processing,2003,50(9): 518-530.
6Analog Device. ADuC845_7_8_a data sheet [Z]. Analog Device,2004-6.