This IP provides an ultra-low power analog front-end (AFE) circuit tailored for both wearable and implantable medical devices. It is engineered to perform clinical-grade electrocardiogram (ECG) waveform measurement and QRS detection with significant accuracy. The high-resolution acquisition chain ensures optimal signal fidelity which is crucial for medical diagnostics and monitoring applications. Its design is centered around enhancing data precision while minimizing power consumption, making it ideal for applications where device battery life is critical.