MAX86174A
PRODUCTIONBest-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health
Industry's Smallest PPG AFE for Space Constrained Wearables
- Part Models
- 2
- 1ku List Price
- Starting From $2.70
Part Details
- 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
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
Documentation
Data Sheet 1
User Guide 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
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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 |
|---|---|---|---|
| MAX86174AENE+ | N161B1+1 | ||
| MAX86174AENE+T | N161B1+1 |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Optical AFEs 3 | ||
| MAX86170A | RECOMMENDED FOR NEW DESIGNS | Best-in-Class Optical Pulse Oximeter and Heart-Rate Sensor AFE for Wearable Health |
| MAX86170B | PRODUCTION | Low-Noise AFE for Pulse Oximeter and Heart Rate Monitor |
| MAX86171 | PRODUCTION | Low-Noise AFE for Pulse Oximeter and Heart Rate Monitor |
Evaluation Kits
Evaluation System for the MAX86174A