MAX30005ENX+

Analog Front End (AFE) Overview

The MAX30005ENX+ is a single-lead electrocardiogram (ECG) analog front-end (AFE) designed for wearable applications. It provides clinical-grade performance with ultra-low power consumption to extend battery life in fitness and medical devices. The device features an ECG channel with electromagnetic interference (EMI) filtering, internal lead biasing, AC/DC lead-off detection, right-leg drive, and standby DC lead-on detection. It supports IEC 60601-2-47 compliance for ambulatory monitoring using dry electrodes. The component operates on a supply voltage between 1.7V and 2V, functions within a -40°C to +85°C temperature range, and utilizes a 6x6mm 36-bump wafer-level package (WLP).

Analog Front End (AFE) Feature Summary

• Clinical-grade ECG AFE with 15.6 ENOB and 0.6μVRMS noise (0.05Hz–40Hz)
• Fully differential input structure with CMRR > 110dB at power-line frequencies
• High input impedance (> 1GΩ) and ±1300mV high DC-offset range
• Shutdown current of 0.5μA (typical)

Analog Front End (AFE) Applications

• Single-lead event monitors for atrial fibrillation (AFib) and arrhythmia detection
• Single-lead wireless patches for at-home or in-hospital monitoring
• Chest-band heart-rate monitors for fitness applications
• Biometric authentication and ECG-on-demand applications

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging type and availability status. Confirm RoHS compliance details directly from the datasheet before procurement. Ensure the design accommodates the WLP-36 package requirements.

Analog Front End (AFE) Selection Notes

Select this component when a dedicated ECG solution is required without integrated PPG capabilities. The MAX86176 serves as the alternative if simultaneous optical data acquisition is needed. Ensure the system design supports the 1.7V to 2V operating voltage range and the specific thermal characteristics for the industrial temperature grade.

Analog Front End (AFE) Part Context

The MAX30005 is part of a family that includes the MAX86176. While both share identical ECG signal paths and low-power architectures, the MAX86176 adds a fully synchronized PPG data acquisition system supporting up to 6 LEDs and 4 photodiodes. The MAX30005 focuses exclusively on the biopotential channel optimized for dry electrode applications.

Analog Front End (AFE) Replacement Considerations

The MAX86176 is the primary functional substitute if PPG integration is acceptable. Verify pin compatibility and register mapping differences when migrating designs between these two variants.