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  2. Sensors and MEMS
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  5. MAXM86161


Features and Benefits

  • 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

Product Details

The MAXM86161 is an ultra-low-power, completely integrated, optical data-acquisition system. On the transmitter side, the MAXM86161 has three programmable high-current LED drivers. On the receiver side, MAXM86161 consists of a high efficiency PIN photo-diode and an optical readout channel. The optical readout has a low-noise signal conditioning analog front-end (AFE), including 19-bit ADC, an industry-lead ambient light cancellation (ALC) circuit, and a picket fence detect and replace algorithm. Due to the low power consumption, compact size, easy, flexible-to-use, and industry lead ambient light rejection capability of the MAXM86161, the device is ideal for a wide variety of optical sensing applications such as heart rate detection and pulse oximetry.

The MAXM86161 operates on a 3.0V to 5.5V VLED single supply voltage. It supports a standard compatible interface and fully autonomous operation. Each device has a large 128-word built-in FIFO. The MAXM86161 is available in compact 2.9mm x 4.3mm x 1.4mm, 14-pin OLGA package.


  • Optimized for In-Ear Applications
  • Miniature Package for Mobile Applications
  • Optimized Performance to Detect:
  • Continuous Monitoring for HRV
  • Optical Heart Rate
  • Oxygen Saturation (SpO2)

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Design Resources

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 Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAXM86161EFD+ Material Declaration Reliability Data 14-LGA_CAV-4.3x2.9x1.4
MAXM86161EFD+T Material Declaration Reliability Data 14-LGA_CAV-4.3x2.9x1.4
Wafer Fabrication Data MAXM86161 Reliability Data

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.