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

Enables HR, SpO2, Afib Detection, and Pulse Transit-Time for Wearable Health

Product Details

The MAX86176 is a complete photoplethysmogram (PPG) and electrocardiogram (ECG) analog front-end (AFE) solution for wearable applications. The MAX30005 is a complete AFE solution for ECG only. Both AFEs offer high performance for fitness and clinical applications with ultra-low power for long battery life.

Both MAX86176 and MAX30005 feature an ECG channel, EMI filtering, internal-lead biasing, AC and DC lead-off detection, right-leg drive, ultra-low power DC lead-on detection during standby mode, and extensive calibration voltages for built in self-test. In addition, the MAX86176 has a PPG data acquisition system supporting up to 6 LEDs and 4 photodiode inputs, which is fully synchronized with the ECG signal path. The MAX86176/MAX30005 can operate with either internal or external clock. The MAX86176/ MAX30005 are designed to meet IEC 60601-2-47 Ambulatory ECG Systems monitoring compliance for even the most challenging dry electrode applications.

The MAX86176/MAX30005 are available in a 6x6 36-bump wafer-level packages (WLP), operating over the -40ºC to +85ºC temperature range.

Key Features

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

Applications/Uses

  • PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
  • PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
  • PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO2), Muscle and Tissue Oxygen Saturation(SmO2 and StO2), and Body Hydration
  • ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
  • ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
  • ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
  • ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
  • PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements
Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 11
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 19
SNR (dB) 109
Package/Pins THIN WLP/36
Budgetary
Price (See Notes)
$4.50 @1k
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Technical Docs

Design & Development

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Description

The MAX86176 evaluation kit (EV kit) provides a platform to evaluate the functionality and features of the MAX86176 with photoplethysmogram (PPG) and electrocardiogram (ECG) measurement capabilities. The EV kit allows for flexible hardware and software configurations to help the user quickly learn how to configure and optimize the MAX86176 for their own applications.

The MAX86176 is a complete PPG and ECG analog front-end solution that consists of two optical readout channels and one single-lead ECG channel that can operate simultaneously. The optical readout channels support up to 6 LEDs and 4 photodiode inputs.

The MAX86176 EV kit consists of two boards. MAXSENSORBLE_HEADER_EVKIT_A is the microcontroller (MCU) board while MAX86176_EVKIT_A is the sensor board containing the MAX86176. To enable PPG and ECG measurement capabilities, the sensor board also contains 3 LEDs (red, green, and IR), 3 discrete photodiodes (Vishay VEMD8080), a 3 LED, 1 photodiode module (Osram SFH7050), and component configurations on the ECG channel. The EV kit can be powered through USB connection to PC using a USB-C to USB-A cable or a LiPo Battery. The EV kit relays data using Bluetooth through the Cypress USB Bluetooth LE dongle. The EV kit contains with the latest firmware but comes with the programming circuit board MAXREFDES100HDK in case a firmware change is needed.

View Details

Features

  • Convenient Platform to Evaluate the MAX86176
  • Many Easy-to-Reach Test Points
  • Real-Time Monitoring and Plotting
  • Data Logging Capabilities
  • Bluetooth™ LE
  • Windows® 10 Compatible GUI software
  • Facilitates IEC 60601-2-47 Compliance Testing

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 11
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 19
SNR (dB) 109
Package/Pins THIN WLP/36
Budgetary
Price (See Notes)
$4.50 @1k

Key Features

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

Applications/Uses

  • PPG (MAX86176): Wearable Devices for Fitness, Wellness and Medical Applications with Clinical Accuracy
  • PPG (MAX86176): Suitable for Wrist, Finger, Ear and Other Locations
  • PPG (MAX86176): Optimized Performance to Detect Heart Rate, Oxygen Saturation (SpO2), Muscle and Tissue Oxygen Saturation(SmO2 and StO2), and Body Hydration
  • ECG (MAX86176/MAX30005): Single-Lead Event Monitors for Atrial Fibrillation (AFib) and other Arrhythmia Detection
  • ECG (MAX86176/MAX30005): Single-Lead Wireless Patches for At-Home/In-Hospital Monitoring
  • ECG (MAX86176/MAX30005): Chest-Band Heart-Rate Monitors for Fitness Applications
  • ECG (MAX86176/MAX30005): Biometric Authentication and ECG-on-Demand Applications
  • PPG-ECG SYNC (MAX86176): Fully Synchronized PPG and ECG Signal Path for PTT Measurements

Description

The MAX86176 is a complete photoplethysmogram (PPG) and electrocardiogram (ECG) analog front-end (AFE) solution for wearable applications. The MAX30005 is a complete AFE solution for ECG only. Both AFEs offer high performance for fitness and clinical applications with ultra-low power for long battery life.

Both MAX86176 and MAX30005 feature an ECG channel, EMI filtering, internal-lead biasing, AC and DC lead-off detection, right-leg drive, ultra-low power DC lead-on detection during standby mode, and extensive calibration voltages for built in self-test. In addition, the MAX86176 has a PPG data acquisition system supporting up to 6 LEDs and 4 photodiode inputs, which is fully synchronized with the ECG signal path. The MAX86176/MAX30005 can operate with either internal or external clock. The MAX86176/ MAX30005 are designed to meet IEC 60601-2-47 Ambulatory ECG Systems monitoring compliance for even the most challenging dry electrode applications.

The MAX86176/MAX30005 are available in a 6x6 36-bump wafer-level packages (WLP), operating over the -40ºC to +85ºC temperature range.

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.