The MAX30102 is an integrated pulse oximetry SpO2 and heart-rate monitor biosensor module. It includes internal LEDs, photodetectors, optical elements, and low-noise electronics with ambient light rejection. The MAX30102 provides a complete system solution to ease the design-in process for mobile and wearable devices.
The MAX30102 operates on a single 1.8V power supply and a separate 3.3V power supply for the internal LEDs. Communication is through a standard I2C-compatible interface. The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.
Heart-Rate Monitor and Pulse Oximeter Biosensor in LED Reflective Solution
Operating Voltage: 1.8 ~ 3.3v
Dimension: 12.7mm * 12.7mm
Tiny 5.6mm x 3.3mm x 1.55mm 14-Pin Optical Module
Integrated Cover Glass for Optimal, Robust Performance
Ultra-Low Power Operation for Mobile Devices
Programmable Sample Rate and LED Current for Power Savings
Low-Power Heart-Rate Monitor (< 1mW)
Ultra-Low Shutdown Current (0.7µA, typ)
Fast Data Output Capability
High Sample Rates
Robust Motion Artifact Resilience
-40°C to +85°C Operating Temperature Range
High-Sensitivity Pulse Oximeter and Heart-Rate Biosensor for Fitness & Healthcare
1 X Low Power MAX30102 Heart Rate Oxygen Pulse Breakout
SpO2 stands for peripheral capillary oxygen saturation, an estimate of the amount of oxygen in the blood. More specifically, it is the percentage of oxygenated haemoglobin (haemoglobin containing oxygen) compared to the total amount of haemoglobin in the blood (oxygenated and non-oxygenated haemoglobin).
SpO2 is an estimate of arterial oxygen saturation, or SaO2, which refers to the amount of oxygenated haemoglobin in the blood.
Haemoglobin is a protein that carries oxygen in the blood. It is found inside red blood cells and gives them their red colour.
SpO2 can be measured by pulse oximetry, an indirect, non-invasive method (meaning it does not involve the introduction of instruments into the body). It works by emitting and then absorbing a light wave passing through blood vessels (or capillaries) in the fingertip. A variation of the light wave passing through the finger will give the value of the SpO2 measurement because the degree of oxygen saturation causes variations in the blood’s colour.
This value is represented by a percentage. If your SpO2 says 98%, this means that each red blood cell is made up of 98% oxygenated and 2% non-oxygenated haemoglobin. Normal SpO2 values vary between 95 and 100%.
Good blood oxygenation is necessary to supply the energy your muscles need in order to function, which increases during a sports activity. If your SpO2 value is below 95%, that could be a sign of poor blood oxygenation, also called hypoxia.
below <94% SpO2 level, consulting your doctor, you may need to breath with oxygen tank
Photo Credits: some images and data are form Internet web resource.