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What is the sampling rate of the analog-to-digital converter in digitizing of ECG signal in signal conditioning?

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What is the sampling rate of the analog-to-digital converter in digitizing of ECG signal in signal conditioning?

(a) 250 Hz

(b) 215 Hz

(c) 40-100 Hz

(d) 200-215 Hz

The question was asked during an internship interview.

Question is from Phonocardiography (PCG) topic in division Biomedical Recorders of Biomedical Instrumentation

1 Answer

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Right option is (a) 250 Hz

To elaborate: In signal conditioning, ECG signal is amplified, filtered (0.05-100 Hz for diagnostic purposes, 1-40 Hz for monitoring purposes) and digitized using an 8 or 12-bit analog-to-digital converter with a typical sampling rate of 250 Hz.

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