Ordinary ECG detection circuit diagram

MOS power IC full range

L0504-Murata muRata common mode inductor 90Ω 150mA

TTS18VSW-A11 19.2MHZ

This circuit is designed for human body ECG detection, using components such as ISO122 and INA115. It meets all the essential requirements for medical devices, including low input impedance, minimal leakage current, high accuracy in signal detection, and ensuring user safety. The signal from the ECG is first isolated by the ISO122 module before being sent to the post-amplifier circuit. This setup ensures both isolation and amplification of the biological signal, while also managing the power supply connection. Additionally, the use of an isolated DC-DC power module helps suppress electromagnetic interference from the surrounding environment and eliminates ground loops, making the system more stable and reliable.