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This document outlines the critical role of A/D converters in the accurate measurement of ECG signals. It discusses the challenges posed by various disturbing signals, including 50/60 Hz interference and artifacts from body movement, which can significantly affect ECG potentials ranging from around 1 mV to as high as 300 mV. The A/D converter component detailed is the 14-bit, 150 MS/s AD9254, manufactured by Analog Devices. Future work will focus on optimizing the operation and performance of the A/D converter, along with data collection and analysis using the SignalTap II Logic Analyzer.
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RPS A/D Converters in Data Conversion HSMC m5151117Yumiko Kimezawa
Outline RPS • The measurement of ECG signals • A/D converter component • Future work
The measurement of ECG signals RPS • Difficult due to many kinds of disturbing signals • 50/60 Hz interference • False signals caused by body movement • and so on • ECG potentials • Around 1 mV • can sometimes rise to 300 mV due to disturbing signals • Frequency • 0.1 ~ 300 MHz • Impedance • 1 ~ 20 KΩ
A/D converter component RPS • Device description • 14-bit, 150 MS/s A/D converter • Manufacturing part number • AD9254 • Manufacturer website • www.analog.com
Future work RPS • Continuing to investigate how to operate an A/D converter • Operating the A/D converter • Exercising A/D converter performance test • Collecting data using the SignalTap II Logic Analyzer • Analyzing the data in the numerical analysis software
