
Healthcare Sensor ICs
Biopotential, Electrochemical, Optical, and Temperature Sensors for Wearable, Fitness, and Medical Applications

Healthcare Sensor ICs
Biopotential, Electrochemical, Optical, and Temperature Sensors for Wearable, Fitness, and Medical Applications
Healthcare sensor ICs use current or optics to sense the human body’s vital signs. Typically, these biosensors condition the signal and send it to a microprocessor for storage, calculation, or display by a health monitoring device.
Our healthcare sensor solutions are ideal for portable medical and wellness applications, as well as wearable medical and fitness applications. Low-power operation fosters longer battery life. These highly integrated sensor ICs reduce the total solution chip count by including analog front-ends (AFEs), ADCs, and ESD/EMI protection circuitry with key features such as:
- Clinical-grade performance for temperature and ECG measurements
- High dynamic range AFEs with low SNR
- Complete optical modules for a variety of applications
- Built-in algorithms
Biopotential Sensor ICs
Optical Health Sensors
Electrochemical Sensor AFE ICs
Wearable Temperature Sensor ICs
Biopotential Sensor ICs
Optical Health Sensors
Electrochemical Sensor AFE ICs
Wearable Temperature Sensor ICs
Featured Videos
Application Notes
Tutorials
Featured Blogs
Wearable Flags Health Changes in Seniors Via Biosensors and Predictive Analytics
Biosensors Detect Sleep Apnea Via Wearable, Home-Based Test
Can Wearable Health Technology Pinpoint Disease Onset?
Getting a Finger on the Pulse of Well-Being
Got a Wearable Health Design Idea? Here’s How to Make It Accurate
Complete Wrist-Based Heart-Rate SpO2 Sensor Reference Design
Design Solutions
User Guides
Customer Testimonials
Featured Products
MAX86176 Ultra-Low-Power, Optical PPG and Single-Lead ECG AFE
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
- 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

MAX30208 ±0.1°C Accurate, I2C Digital Temperature Sensor
- High Accuracy and Precision
- ±0.1° C Accuracy from +30°C to +50°C
- ±0.15°C Accuracy from +0°C to +70°C
- Low Power Consumption
- 1.7V to 3.6V Operating Voltage
- 67μA Operating Current During Measurement
- 0.5μA Standby Current
- 15ms Integration Time
- Small Size
- 2mm x 2mm x 0.75mm, 10-Pin Thin LGA
- Safety and Compliance
- High and Low Temperature Alarms
- Digital Interface
- Configurable Convert Temperature Input Pin
- Configurable Interrupt Output Pin
- 32-Word FIFO for Temperature Data
- 4 I2C Addresses Available—More Addresses Available by Request
- Unique ROM IDs Allow Device to be NIST Traceable

MAX86140 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health
- 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 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health
- 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
- > 100μA Ambient Photodetector 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
- 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
MAX86176 Ultra-Low-Power, Optical PPG and Single-Lead ECG AFE
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
- 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

MAX30208 ±0.1°C Accurate, I2C Digital Temperature Sensor
- High Accuracy and Precision
- ±0.1° C Accuracy from +30°C to +50°C
- ±0.15°C Accuracy from +0°C to +70°C
- Low Power Consumption
- 1.7V to 3.6V Operating Voltage
- 67μA Operating Current During Measurement
- 0.5μA Standby Current
- 15ms Integration Time
- Small Size
- 2mm x 2mm x 0.75mm, 10-Pin Thin LGA
- Safety and Compliance
- High and Low Temperature Alarms
- Digital Interface
- Configurable Convert Temperature Input Pin
- Configurable Interrupt Output Pin
- 32-Word FIFO for Temperature Data
- 4 I2C Addresses Available—More Addresses Available by Request
- Unique ROM IDs Allow Device to be NIST Traceable

MAX86140 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor for Wearable Health
- 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 Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health
- 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
- > 100μA Ambient Photodetector 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
- 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