This circuit is a human body ECG detection circuit composed of ISO122 and INA115. The circuit can fully meet the requirements of medical device use, namely, low input impedance, low leakage current, high detection accuracy and human body safety. The output signal is transmitted from ISO122 to the post-amplifier circuit to realize the isolation and amplification of the human body signal and the output and the power supply. The isolated DC-DC module can effectively suppress the electromagnetic interference of the surrounding environment and eliminate the ground loop.
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