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Which analog-to-digital converter is used in the digitization of ECG signal in signal conditioning?(a) 16 bit(b) 12 bit(c) 32 bit(d) 64 bitThis question was addressed to me in unit test.The origin of the question is Phonocardiography (PCG) in chapter Biomedical Recorders of Biomedical Instrumentation

Answer»

Correct answer is (b) 12 bit

Explanation: In signal CONDITIONING, ECG signal is amplified, filtered and DIGITIZED using an 8 or 12 bit analog-to-digital CONVERTER with a typical SAMPLING rate of 250 Hz.



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