Ultra-Low Power, Single-Channel Integrated Biopotential HR Detection AFE

Ultra-Low Power, Single Channel Integrated Biopotential HR Detection AFE

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The MAX30004 is a complete, biopotential, HR detection analog front-end solution for wearable applications, especially for chest straps and patches. It offers high performance for clinical and fitness applications, with ultra-low power for long battery life. The MAX30004 is a single biopotential channel providing R-R intervals for heart rate detection.

The biopotential channel has ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultra-low power leads-on detection during standby mode, and extensive calibration voltages for built-in self-test. Soft power-up sequencing ensures no large transients are injected into the electrodes. The biopotential channel also has high input impedance, low noise, high CMRR, programmable gain, various low-pass and high-pass filter options, and a high-resolution analog-to-digital converter. The biopotential channel is DC coupled, can handle large electrode voltage offsets, and has a fast recovery mode to quickly recover from overdrive conditions, such as defibrillation and electrosurgery.

The MAX30004 is available in a 28-pin TQFN and 30-bump wafer-level package (WLP), operating over the 0°C to +70°C commercial temperature range.

MAX30004: Functional Diagram MAX30004: Functional Diagram Enlarge+

Key Features

  • Heart Rate Detection with Interrupt Feature Eliminates the Need to Extract and Process the ECG Data on the Microcontroller
    • Robust R-R Detection in High Motion Environment at Extremely Low Power
  • Clinical-Grade Biopotential AFE with High-Resolution Data Converter
    • 15.5 Bits Effective Resolution with 5µVP-P Noise
  • Better Dry Starts Due to Much Improved Real World CMRR and High Input Impedance
    • Fully Differential Input Structure with CMRR > 100dB
  • Offers Better Common-Mode to Differential Mode Conversion Due to High Input Impedance
    • High Input Impedance > 500MΩ for Extremely Low Common-to-Differential Mode Conversion
  • Minimum Signal Attenuation at the Input During Dry Start Due to High Electrode Impedance
  • High DC Offset Range of ±650mV (1.8V, typ) Allows to Be Used with Wide Variety of Electrodes
  • High AC Dynamic Range of 65mVP-P Will Help the AFE Not Saturate in the Presence of Motion/Direct Electrode Hits
  • Longer Battery Life Compared to Competing Solutions
    • 85µW at 1.1V Supply Voltage
  • Leads-On Interrupt Feature Keeps µC in Deep Sleep Mode with RTC Off Until Valid Lead Condition is Detected
    • Lead-On Detect Current: 0.7µA (typ)
  • Configurable Interrupts Allows the µC Wake-Up Only on Every Heart Beat Reducing the Overall System Power
  • High-Speed SPI Interface
  • Shutdown Current of 0.5µA (typ)


  • Chest Band Heart Rate Monitors for Fitness Applications
  • Single Lead Wireless Patches for At-Home/In-Hospital Monitoring
Part NumberApplicationsIntegrated LEDsISUPPLY
Shutdown Mode Supply Current
Oper. Temp.
typtypminmaxADCSee Notes
At-home Monitoring
Chest Straps
Disposable ECG Monitors
ECG Monitors
Wearable Patient Monitors
R-R Detection1000.421.12180 to +70
$3.23 @1k
See All Bio-Sensors (13)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 6778 How To Measure Biopotential ECG Using a Chest Strap Tutorial

Quality and Environmental Data

Request Reliability Report for: MAX30004 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX30004 IBIS Model
  • CAD Symbols and Footprints

  • MAX30004CWV+
  • MAX30004CWV+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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