MAXM86161

PRODUCTION

Single-Supply Integrated Optical Module for HR and SpO₂ Measurement

Low Power Integrated In-Ear Heart Rate Monitor

Data Sheet (Rev. 1) Product Selection Table

Part Models: 2
1ku List Price: Starting From $5.25

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Part Details

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

Part Models: 2
1ku List Price: Starting From $5.25

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAXM86161EFD+	14-LGA_CAV-4.3x2.9x1.4	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAXM86161EFD+T	14-LGA_CAV-4.3x2.9x1.4	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

Software Development 4

Download MAXM86161 in ready-to-use CAD formats from Ultra Librarian

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Evaluation Kits

Evaluation System for the MAXM86161

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Features and Benefits

Performance Evaluation of the MAXM86161 Sensor (e.g., SNR, Dark Current, Noise, etc.)
Performance Evaluation of Maxim Algorithms for Power Optimization, Heart Rate (HR), SpO₂ (Peripheral Capillary Oxygen Saturation), etc. Using the On-Board MAX32664GWEC+ Biometric Sensor Hub Microcontroller
Facilitates Understanding of MAXM86161 Architecture and Solution Strategy
Real-Time Monitoring and Data Logging Capabilities
On-Board Accelerometer
Bluetooth^® LE for wireless data collection

Product Details

The MAXM86161EVSYS# evaluation system (EV sys-tem) allows for the quick evaluation of the MAXM86161 integrated optical module for applications at various sites on the body, particularly in-ear and mobile applications. The MAXM86161 device communicates using a standard I2C-compatible interface to Analog devices on-board MAX32664 Biometric Sensor Hub microcontroller (used for Analog devices algorithm evaluation) or in a pass- through mode for raw data collection. The MAXM86161 device consists of three optical readout channels that can be individually controlled (Green, Red, and IR). The EV system allows for flexible configurations to allow testing of various features of the sensor. Moreover, it helps the user quickly learn how to configure and use the MAXM86161 device.

The primary EV system consists of two circuit board assemblies (MAXSensorBLE_EVKIT and MAXM86161OSBFLEX), one USB-C to USB-A connector cable, and a Lithium Polymer battery. These components are highlighted in Figure 1 below. In addition, two programming circuit boards (MAXM86161_MAX32630_ PRGMR_ASSY, and the MAXREFDES100HDK) and one USB-B Micro-to-USB-A Male USB cable are provided for firmware updates if needed.

The EV system can be powered using a USB-C supply or LiPo Battery and comes with a MAXM86161EFD+ device in a 14-pin OLGA package.

The MAXM86161OSBFLEX Flex-Rigid circuit board has a Analog devices MAX32664 Biometric Sensor Hub microcontroller device installed. This Sensor Hub can be used to implement Analog devices HR/SpO2 Algorithm for evaluation. The MAXM86161 GUI PC application code that allows evaluation of both the MAXM86161EVSYS# and the MAX32664 Sensor Hub is available in the MAXM86161EVSYS# EV System Design Resources tab.

Applications