MAX86174A
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MAX86174A

Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health

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Industry's Smallest PPG AFE for Space Constrained Wearables

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Part Details
Part Models 2
1ku List Price Starting From $2.70
Features
  • 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 2048fps
  • 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
Additional Details
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The MAX86174A/MAX86174B are ultra-low-power optical data acquisition systems with both transmit and receive channels. On the transmitter side, the MAX86174A/MAX86174B have four LED driver output pins. Each pin is programmable from two, high-current, 8-bit LED drivers. On the receiver side, the MAX86174A consists of two optical readout channels that can operate simultaneously while the MAX86174B has a single optical readout channel. The devices have low-noise, charge-integrating analog front-end, 20-bit ADC, and best-in-class ambient-light cancellation (ALC) circuits.

Due to the low power consumption, compact size, ease and flexibility of use, the MAX86174A/MAX86174B are ideal for a wide variety of optical sensing applications such as pulse oximetry and heart-rate detection.

The MAX86174A/MAX86174B operate on a 1.8V main supply voltage and a 2.7V to 5.5V LED driver supply voltage. The devices support both I2C- and SPI-compatible interfaces in a fully autonomous way. The devices have a large 256-word built-in FIFO. The MAX86174A/MAX86174B are available in a compact 16-WLP package.

Applications

  • Body Hydration
  • Clinical Accuracy
  • Heart-Rate Variability
  • Maximum Oxygen Consumption (VO2 max)
  • Muscle and Tissue Oxygen Saturation (SmO2 and StO2)
  • Optical Heart Rate
  • Optimized Performance to Detect
  • Oxygen Saturation (SpO2)
  • Suitable for Wrist, Finger, Ear, and Other Locations
  • Wearable Devices for Fitness, Wellness and Medical Applications

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Part Models 2
1ku List Price Starting From $2.70

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jul 28, 2021

- 2172

TEST

MAX86174AENE+

PRODUCTION

MAX86174AENE+T

PRODUCTION

May 20, 2021

- 2147

WAFER FAB

MAX86174AENE+

PRODUCTION

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PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Jul 28, 2021

- 2172

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TEST

MAX86174AENE+

PRODUCTION

MAX86174AENE+T

PRODUCTION

May 20, 2021

- 2147

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WAFER FAB

MAX86174AENE+

PRODUCTION

MAX86174AENE+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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MAX86174EVSYS

Evaluation System for the MAX86174A

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MAX86174EVSYS

Evaluation System for the MAX86174A

Evaluation System for the MAX86174A

Features and Benefits

  • Convenient Platform to Evaluate the MAX86174A
  • Many Easy-to-Reach Test Points
  • Real-Time Monitoring and Plotting
  • Data Logging Capabilities
  • Bluetooth LE
  • Windows®-10-Compatible GUI software

Product Detail

The MAX86174 evaluation system (EV Sys) provides a platform to evaluate the functionality and features of the MAX86174A with photoplethysmogram (PPG) measurement capabilities. The EV Sys allows for flexible hardware and software configurations to help the user quickly learn how to configure and optimize the MAX86174A for their own applications.

The MAX86174A is an ultra-low power PPG analog frontend solution that has dual optical-readout channels and supports up to 4 LEDs and 2 photodiode inputs. For more information, refer to the MAX86174A data sheet.

The MAX86174 EV Sys consists of two boards. MAXSENSORBLE_EVKIT_B is the microcontroller (MCU) board while MAX86174A_OSB_EVKIT_B is the sensor board containing the MAX86174A. To enable PPG measurement capabilities, the sensor board contains 3 LEDs (red, green, and IR in a single package: OSRAM SFH7016), three discrete photodiodes (Vishay VEMD8080), and an accelerometer. The EV Sys is powered through the included LiPo Battery. The EV Sys communicates with MAX86174GUI (should be installed in user’s system) using Bluetooth built into Windows (Win BLE). The EV Sys contains the latest firmware but comes with the programming circuit board MAXDAP-TYPE-C in case a firmware change is needed.

Applications

  • Body Hydration
  • Clinical Accuracy
  • Heart-Rate Variability
  • Maximum Oxygen Consumption (VO2 max)
  • Muscle and Tissue Oxygen Saturation (SmO2 and StO2)
  • Optical Heart Rate
  • Optimized Performance to Detect
  • Oxygen Saturation (SpO2)
  • Suitable for Wrist, Finger, Ear, and Other Locations
  • Wearable Devices for Fitness, Wellness and Medical Applications

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