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Optical Health Sensors 
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/content/maximintegrated/en/products/sensors/healthcare-sensor-ics/optical-health-sensors 
Optical health sensor ICs for body-wearable applications track health and wellness with complete biosensing solutions for continuous heart-rate tracking, heart variability, and oxygen saturation. Our portfolio of complete optical sensor solutions includes highly integrated optical modules for space-constrained form factors, high SNR analog front-ends (AFEs) to address low perfusion cases (corner cases), and algorithms that extract meaningful information from photoplethysmography (PPG) signals.
Ultra-low power consumption and leading-edge packaging technology extend product battery life, reduce solution size, and accelerate time-to-market. Our portfolio enables optical sensor solutions for a variety of use cases and body locations.
Our packaging innovation in optical modules has paved the path way for optical biosensing in mobile phones and in-ear headsets. These biosensor optical modules are creatively assembled in optically enhanced packaging. The packaging technology eliminates crosstalk between LEDs and photodiodes (PD) without compromising the optical spacing necessary to extract useful signals from the body.
Our heart-rate (HR) and consumer-grade SpO2 algorithms meet FDA requirements and work seamlessly with our optical sensor devices.
Featured Videos
Introduction to the MAX86150 Integrated Photoplethysmogram and Electrocardiogram Biosensor Module for Mobile Health
0:04:14 January 16, 2018
User Guides
MAXREFDES104: Health Sensor Platform 3.0 User Guide (NDA required)
Application Notes
Design Solutions
Technical Documentation
MAX86174A Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health
The MAX86174A/MAX86174B are ultra-low-power optical data acquisition systems with both transmit ...
- Complete Optical Data Acquisition System
- Ultra-Low-Power Operation for Body Wearable Devices
- Low-Power-Operation, Optical Readout Channel < 11µA (typ) at 25fps
- Exposure Integration Period Ranging from 14.6µs to 117.1µs
- Low Shutdown Current < 1µA (typ)
- Excellent Top-End Dynamic Range > 93dB in White Card Loop-Back Test (Nyquist Sample-to-Sample Variance)
- Extended Dynamic Range up to 111dB (Averaging and Off-Chip Filtering) to Enable SpO2 on Wrist/Chest for Low Perfusion Cases
- Support Frame Rates from 1fps to 2.9kfps
- High-Resolution 20-Bit Charge-Integrating ADCs
- Support Both Burst Averaging and Decimation Averaging Modes
- On-Chip 12Hz Low-Pass Filter for Improved SNR and Reduced Power for Continuous Heart-Rate Measurement
- Supports Two PD Inputs for Multi-Parameter Measurements
- Supports Four LED Driver Output Pins Generated from Two 8-Bit LED Current Drivers
- Low Dark-Current Noise of < 50pARMS (Sample-to-Sample Variance in 117.1µs Integration Time)
- Excellent Ambient Range and Rejection Capability
- 200µA Ambient Photodiode Current
- > 70dB Ambient Rejection at 120Hz (Burst Average > 2)
- Miniature 1.67mm x 1.78mm, 0.4mm Ball Pitch, 4 x 4 WLP Package
- -40°C to +85°C Operating Temperature Range
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
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
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
MAX86171 Low-Noise AFE for Pulse Oximeter and Heart Rate Monitor
The MAX86171 is an ultra-low-power optical data acquisition system with both transmit and receiv...
- Complete Dual-Channel Optical Data Acquisition System
- Ultra Low-Power Operation for Wearable Devices
- Low-Power Operation, Optical Readout Channel < 11µA at 25fps
- Exposure Integration Period Ranging from 14.6µs to 117.1µs
- Low Shutdown Current < 1µA
- Excellent Top-End Dynamic Range > 91dB in White Card Loop-Back Test (Nyquist Sample-to-Sample Variance)
- Extended Dynamic Range up to 110dB (Averaging and Off-Chip Filtering)
- Supports Frame Rates from 1fps to 2.9kfps
- High Resolution 19.5-Bit Charge Integrating ADCs
- Supports Four PD Inputs for Multi-Parameter Measurements
- Supports Nine LED Driver Output Pins Generated from Three 8-Bit LED Current Drivers
- Low Dark Current Noise of < 50pA RMS (Sample-to-Sample Variance in 117.1µs Integration Time)
- Excellent Ambient Range and Rejection Capability
- > 200μA Ambient Photodiode Current
- > 70dB Ambient Rejection at 120Hz (Average Mode > 2)
- Miniature 2.78mm x 1.71mm, 7 x 4, 0.35mm Ball Pitch WLP Package
- -40°C to +85°C Operating Temperature Range
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
MAX86174A Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health
The MAX86174A/MAX86174B are ultra-low-power optical data acquisition systems with both transmit ...
- Complete Optical Data Acquisition System
- Ultra-Low-Power Operation for Body Wearable Devices
- Low-Power-Operation, Optical Readout Channel < 11µA (typ) at 25fps
- Exposure Integration Period Ranging from 14.6µs to 117.1µs
- Low Shutdown Current < 1µA (typ)
- Excellent Top-End Dynamic Range > 93dB in White Card Loop-Back Test (Nyquist Sample-to-Sample Variance)
- Extended Dynamic Range up to 111dB (Averaging and Off-Chip Filtering) to Enable SpO2 on Wrist/Chest for Low Perfusion Cases
- Support Frame Rates from 1fps to 2.9kfps
- High-Resolution 20-Bit Charge-Integrating ADCs
- Support Both Burst Averaging and Decimation Averaging Modes
- On-Chip 12Hz Low-Pass Filter for Improved SNR and Reduced Power for Continuous Heart-Rate Measurement
- Supports Two PD Inputs for Multi-Parameter Measurements
- Supports Four LED Driver Output Pins Generated from Two 8-Bit LED Current Drivers
- Low Dark-Current Noise of < 50pARMS (Sample-to-Sample Variance in 117.1µs Integration Time)
- Excellent Ambient Range and Rejection Capability
- 200µA Ambient Photodiode Current
- > 70dB Ambient Rejection at 120Hz (Burst Average > 2)
- Miniature 1.67mm x 1.78mm, 0.4mm Ball Pitch, 4 x 4 WLP Package
- -40°C to +85°C Operating Temperature Range
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
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
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
MAX86171 Low-Noise AFE for Pulse Oximeter and Heart Rate Monitor
The MAX86171 is an ultra-low-power optical data acquisition system with both transmit and receiv...
- Complete Dual-Channel Optical Data Acquisition System
- Ultra Low-Power Operation for Wearable Devices
- Low-Power Operation, Optical Readout Channel < 11µA at 25fps
- Exposure Integration Period Ranging from 14.6µs to 117.1µs
- Low Shutdown Current < 1µA
- Excellent Top-End Dynamic Range > 91dB in White Card Loop-Back Test (Nyquist Sample-to-Sample Variance)
- Extended Dynamic Range up to 110dB (Averaging and Off-Chip Filtering)
- Supports Frame Rates from 1fps to 2.9kfps
- High Resolution 19.5-Bit Charge Integrating ADCs
- Supports Four PD Inputs for Multi-Parameter Measurements
- Supports Nine LED Driver Output Pins Generated from Three 8-Bit LED Current Drivers
- Low Dark Current Noise of < 50pA RMS (Sample-to-Sample Variance in 117.1µs Integration Time)
- Excellent Ambient Range and Rejection Capability
- > 200μA Ambient Photodiode Current
- > 70dB Ambient Rejection at 120Hz (Average Mode > 2)
- Miniature 2.78mm x 1.71mm, 7 x 4, 0.35mm Ball Pitch WLP Package
- -40°C to +85°C Operating Temperature Range
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
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