An Improved Micro-power Pre-amplifier for Dry-electrode ECG Recording
نویسندگان
چکیده
This paper describes the development of a very low-power pre-amplifier intended for use in pasteless-electrode recording of the human electrocardiogram. The expected input signal range is 100μV 10mV from a lead II electrode configuration. The amplifier provides a gain of 42dB in a 3dB bandwidth of 0.05Hz 2kHz with an input impedance of 280MΩ and a CMRR of greater than 80dB. Its gain and phase characteristics meet the recommendations of the AHA, making it suitable for clinical diagnostic monitoring. The amplifier has a power consumption of 20μW operating from a 3V battery and is intended for use in small, lightweight, portable electrocardiographic equipment and heart-rate monitoring instrumentation. Key-Words: ECG, Dry-electrodes, Ultra-low power amplifier, Skin-Electrode Interface.
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تاریخ انتشار 2007