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

Best-in-Class SNR for Addressing Low Perfusion & New Use Cases

产品详情

主要特征

应用/用途

Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 11
Shutdown Mode Supply Current (µA) (typ) 1
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 19
SNR (dB) 109
Oper. Temp. (°C) -40 to +85
Package/Pins THIN WLP/24
Budgetary
Price (See Notes)
1.19
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参量

Parametric specs for Bio-Sensors
ISUPPLY (µA) (typ) 11
Shutdown Mode Supply Current (µA) (typ) 1
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 2
Resolution (bits) (ADC) 19
SNR (dB) 109
Oper. Temp. (°C) -40 to +85
Package/Pins THIN WLP/24
Budgetary
Price (See Notes)
1.19

主要特征

  • Complete Single-Channel Optical Data Acquisition System
  • Ultra Low-Power Operation for Wearable Devices
    • Low-Power Operation, Optical Readout Channel < 11micro;A 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 20-Bit Charge Integrating ADC
  • Supports Two PD Inputs for Multiparameter Measurements
  • Supports Four 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
    • 200µA Ambient Photodetector Current
    • > 70dB Ambient Rejection at 120Hz
  • Miniature 2.78mm x 1.71mm 6 x 4, 0.4mm Ball Pitch WLP Package
  • -40°C to +85°C Operating Temperature Range

应用/用途

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

描述

The MAX86170B is an ultra-low-power optical data acquisition system with both transmit and receive channels. On the transmitter side, the MAX86170B has four LED driver output pins, programmable from three high-current, 8-bit LED drivers. On the receiver side, MAX86170B has a low-noise charge integrating front-end that includes a 20-bit ADC and best-in-class ambient light cancellation (ALC) circuit, producing the highest performing integrated optical data acquisition system on the market today.

Due to its low power consumption, compact size, ease- and flexibility-of-use, the MAX86170B is ideal for a wide variety of optical sensing applications such as pulse oximetry and heart rate detection.

The MAX86170B operates on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. The device supports both I2C- and SPI-compatible interfaces in a fully autonomous way. The device has a large 256-word built-in FIFO. The MAX86170B is available in a compact WLP package 2.78mm x 1.71mm with 6 x 4, 0.4mm ball pitch.

简化框图

MAX86170B: Simplified Block Diagram MAX86170B: Simplified Block Diagram Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心