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Biopotential sensor ICs provide electrocardiogram (ECG) waveforms, heart rate/pacemaker edge detection, and bioimpedance (BioZ) measurements with clinical-grade accuracy (IEC 60601-2-47).

Our biopotential sensors deliver highly integrated analog front-end (AFE) solutions for complete ECG and BioZ recordings while consuming the lowest power. Typical applications include cardiac health monitoring, heart-rate monitoring, arrhythmia detection, stress test applications, and respiration monitoring. Wafer-level packages (WLPs) support small form factors in wearable applications such as medical patches, wrist-worn devices, and chest-strap heart-rate monitors.

Key Features Include:

  • Low-power operation for continuous monitoring
  • Integrated ECG, bioimpedance, PACE detect and R-R algorithm
  • Small-size solutions, with pin-compatible packages
  • Clinical-grade measurement (meets IEC60601-2-47)

Featured Videos


Introducing the MAX-ECG-MONITOR Wearable ECG and Heart Monitor
5:17 June 22, 2018


How to Measure Bioimpedance (Bio-Z) with the MAX30001EVSYS
3:43 March 05, 2018


Make High-Accuracy Biopotential and BioZ Measurements with MAX30001
3:52 November 16, 2017

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Featured Products

MAX86176 Ultra-Low-Power, Optical PPG and Single-Lead ECG AFE

The MAX86176 is a complete photoplethysmogram (PPG) and electrocardiogram (ECG) analog front-end...

PPG (MAX86176)

  • Complete Dual-Channel Optical-Data Acquisition System
  • Ultra-Low-Power Operation for Wearable Devices
    • Optical Readout Channel < 11μA (typ) at 25fps
    • 14.6μs to 117.1μs ADC Integration Time
    • Low Shutdown Current < 1μA (typ)
  • Signal to Noise Ratio (SNR) up to 110dB with Average (Avg) Mode and Off-Chip Filtering
  • Supports Frame Rates from 1fps to 2kfps
  • High-Resolution 20-bit Charge-Integrating ADCs
  • Low Dark-Current Noise of < 50pARMS
  • Excellent Ambient Range and Rejection Capability
    • > 100μA Ambient Photodiode Current
    • > 90dB Ambient Rejection at 120Hz (Avg > 2)

ECG (MAX86176/MAX30005)

  • Clinical-Grade ECG AFE with High-Resolution ADC
    • 15.6 ENOB with 0.6μVRMS Noise over 0.05Hz to 40Hz
  • Very Low Input-Bias Current (-40°C to +85°C)
    • 233fARMS Input-Current Noise (0.05Hz to 40Hz, TA = +25°C)
  • Fully Differential Input Structure with CMRR > 110dB at Power-Line Frequencies
  • High-Input Impedance > 1GΩ for Extremely Low Common to Differential-Mode Conversion
  • High DC-Offset Range of ±1300mV (typ 1.8V) Allows a Wide Variety of Electrodes to be Used
  • High AC-Dynamic Range of > 90mVP-P Helps Prevent Saturation in the Presence of Motion
  • ECG Biopotential Channel Can Be Used for Some EEG Applications
    • Higher-Gain Ranges Available (480V/V, 960V/V)
    • Low Input-Referred Voltage and Current Noise Enables Use of Small-Area Dry Electrodes

SYSTEM

  • Shutdown Current of 0.5μA (typ)
  • 256-Word FIFO for ECG and PPG
  • True Synchronous ECG and PPG Data from Dedicated Signal Paths
  • Two Fully Configurable Interrupts
  • High-Speed SPI Interface or I2C Interface
  • Small 2.728mm x 2.708mm WLP Package
MAX30001 Ultra-Low-Power, Single-Channel IntegratedBiopotential (ECG, R-to-R, and Pace Detection)and Bioimpedance (BioZ) AFE

MAX30001 Ultra-Low-Power, Single-Channel IntegratedBiopotential (ECG, R-to-R, and Pace Detection)and Bioimpedance (BioZ) AFE

The MAX30001 is a complete, biopotential and bioimpedance (BioZ), analog front-end (AFE) solutio...
  • Can be Used in IEC 60601-2-47:2012 Compliant Systems
  • Clinical-Grade ECG AFE with High-Resolution Data Converter
    • 15.9 Bits ENOB with 3.1µVPP (typ) Noise for ECG
    • 17 Bits ENOB with 1.1µVPP Noise for BioZ
  • 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 > 1GΩ for Extremely Low Common-to-Differential Mode
  • 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 or ECG and 90mVP-P for BioZ Will Help Prevent Saturation in the Presence of Motion/Direct Electrode Hits
  • Longer Battery Life Compared to Competing Solutions
    • 85µW at 1.1V Supply Voltage for ECG
    • 158µW at 1.1V Supply Voltage for BioZ
  • Leads-On Interrupt Feature Allows to Keep the µC in Deep Sleep Mode Until Valid Lead Condition is Detected
    • Lead-On Detect Current: 0.7µA (typ)
  • Built-In Heart Rate Detection with Interrupt Feature Eliminates the Need to Run HR Algorithm on the μController
    • Robust R-R Detection in High Motion Environment at Extremely Low Power
  • Configurable Interrupts Allows the µC Wake Up Only on Every Heart Beat Reducing the Overall System Power
  • High Accuracy Allows for More Physiological Data Extractions
  • 32-Word ECG and 8-Word BioZ FIFOs Allows the MCU to Stay Powered Down for 256ms with Full Data Acquisition
  • High-Speed SPI Interface
  • Shutdown Current of 0.6µA (typ)
MAXM86146 Complete Optical Biosensing Module with Ultra-Low-Power Biometric Sensor Hub

MAXM86146 Complete Optical Biosensing Module with Ultra-Low-Power Biometric Sensor Hub

The MAXM86146 is the world’s smallest highly-integrated, optical data acquisition system. It com...
  • Complete Biometric Sensor Hub
    • Supports Simultaneous Wrist-Based Pulse Heart Rate (WHRM) and Pulse Blood Oxygen Saturation (WSpO2) Measurements
    • Integrated MAX86141 Dual-Channel Optical AFE
    • Integrated MAX32664C Arm® Cortex®-M4 based MCU
    • Two Integrated 3.8mm2 PIN Photodiodes
      • Can Operate Independently (Two Channels)
      • Can Be Combined to Give a Total Radiant Area of 7.6mm2 for Additional Flexibility
    • Excellent SNR Enables Measurements on a Wide Range of Users
      • Dynamic Range > 90dB in White Card Loop- Back Test (Sample-to-Sample Variance)
      • Dynamic Range Extendable to > 104dB for SpO2 and > 110dB for HRM with Multiple Sample Modes and On-Chip Averaging
    • Convenient Solution Enables Faster Time-to-Market
    • Ultra-Small 4.5mm x 4.1mm x 0.88mm, 38-Pin OLGA Package Size
  • World-Class Algorithm for Wearable Applications
    • Supports Multiple Accelerometer Options to Allow Robust Detection and Rejection of Motion Artifacts
    • Both Raw and Processed Data are Available
    • FIFO Provides Minimal Host Interaction
    • Ultra-Low Power for Body Wearable Devices
      • AFE Only Requires 10μA Typical at 25sps
      • MCU Supports Deep-Sleep Mode, Allowing Device to Sleep Between Measurements.
      • Automatic Exposure Control (AEC) Algorithm Adjusts the Optical AFE Settings, Maximizing SNR while Minimizing Power Consumption
MAX86140 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health

MAX86140 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health

The MAX86140/MAX86141 are ultra-low-power, com- pletely integrated, optical data acquisition sys...
  • Complete Single-Channel, Optical Data Acquisition System
  • Optimized Architecture for Transmissive and Reflective Heart Rate or SpO2 Monitoring
  • Low Dark Current Noise of < 50pA RMS (Sample to Sample Variance)
  • Lower Effective Dark Current Noise Achievable Through Multiple Sample Modes and On-Chip Averaging
  • High-Resolution, 19-bit Charge Integrating ADC
  • Three Low-Noise, 8-Bit LED Current DACs
  • Excellent Dynamic Range >89dB in White Card Loop-Back Test (Sample-to-Sample Variance)
  • Dynamic Range Extendable to >104dB for SpO2 and >110dB for HRM with Multiple Sample Modes and On-Chip Averaging
  • Excellent Ambient Range and Rejection Capability
    • > 100µA Ambient Photodetector Current
    • > 70dB Ambient Rejection at 120Hz
  • Ultra-Low-Power Operation for Body Wearable Devices
    • Low-Power Operation, Optical Readout Channel <10µA Typical at 25sps
    • Short Exposure Integration Period of 14.8µs, 29.4µs, 58.7µs, 117.3µs
    • Low Shutdown Current = 0.6µA (typ)
  • Rejection of Fast Ambient Transients
  • Miniature 2.048 x 1.848mm, 5 x 4 0.4mm Ball Pitch WLP
  • -40°C to +85°C Operating Temperature Range
MAXM86161 Single-Supply Integrated Optical Module for HR and SpO<sub>2</sub> Measurement

MAXM86161 Single-Supply Integrated Optical Module for HR and SpO2 Measurement

The MAXM86161 is an ultra-low-power, completely integrated, optical data-acquisition system. On ...
  • Complete Single-Channel Optical Data Acquisition System
  • Built-In Algorithm Further Enhances Rejection of Fast Ambient Transients
  • Optimized Architecture for Reflective Heart Rate and SpO2 Monitoring
  • Low Dark Current Noise of < 50pA RMS (Sample-to-Sample Variance)
  • Lower Effective Dark Current Noise Achievable through Multiple Sample Modes and On-Chip Averaging
  • High-Resolution 19-bit Charge Integrating ADC
  • Three Low-Noise 8-Bit LED Current DACs
  • Excellent Dynamic Range > 89dB in White Card Loop-Back Test (Sample-to-Sample Variance)
  • Excellent Ambient Range and Rejection Capability
    • > 100μA Ambient Photodetector Current
    • > 70dB Ambient Rejection at 120Hz
  • Ultra-Low-Power Operation for Wearable Devices
    • Low-Power Operation, Optical Readout Channel < 10μA, Typical at 25sps
    • Short Exposure Integration Period of 14.8μs, 29.4μs, 58.7μs, 117.3μs
    • Low Shutdown Current = 1.6μA (typ)
  • Miniature 2.9mm x 4.3mm x 1.4mm, 14-pin OLGA Package
  • -40°C to +85°C Operating Temperature Range
MAX30034 Defibrillation/Surge/ESD Protector

MAX30034 Defibrillation/Surge/ESD Protector

The MAX30034 is a patent-pending protection devices intended to (with the help of external, ener...
  • Low Leakage Defibrillation Protection IC Helps ECG Systems
  • Low Capacitance ~ 3pF
  • Low Leakage ~ 20pA @ 70°C
  • Fast Turn-On < 2ns
  • Low On-Voltage 3.9V (typ)
  • High Peak Current in Excess of 4A
  • Withstands Over 100k Defibrillation Pulses Without Failure
  • 0°C to 70°C Temperature Range
  • Small, 3mm X 5mm µMAX® Package
MAX30004 Ultra-Low Power, Single-Channel Integrated Biopotential HR Detection AFE

MAX30004 Ultra-Low Power, Single-Channel Integrated Biopotential HR Detection AFE

The MAX30004 is a complete, biopotential, HR detection analog front-end solution for wearable ap...
  • 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)