MAX30102 Heart Rate and Pulse Oximeter Sensor

The MAX30102 Heart Rate and Pulse Oximeter Sensor is an advanced optical module designed to measure heart rate and blood oxygen saturation (SpO2) with exceptional accuracy. It integrates red and infrared LEDs along with a high-sensitivity photodetector, which ensures precise readings even during motion or intense physical activity.

Moreover, this sensor operates with ultra-low power consumption, making it ideal for battery-powered and portable devices such as fitness trackers, smartwatches, and health monitoring systems. In addition, its compact and highly integrated design simplifies circuit integration, reducing both development time and cost.

Furthermore, the MAX30102 includes built-in ambient light cancellation and motion artifact reduction, ensuring stable and reliable data even in challenging environments. These features make it a perfect choice for developers who require dependable performance in wearable or IoT-based health monitoring projects.

As a result, this sensor has become a preferred solution in modern medical and wellness devices, where efficiency and precision are crucial. Additionally, it supports I2C communication, allowing easy interface with microcontrollers such as Arduino, ESP32, and Raspberry Pi.

Features

• Optical heart-rate and pulse oximetry solution for accurate health monitoring.

• Upgraded version of the MAX30100 with better accuracy, enhanced reliability, and new features.

• New improvements include proximity sensing and advanced ambient light rejection.

• Tiny breakout board design for easy integration into compact systems.

• Extremely low power and suitable for wearable or portable devices.

• Non-chest-based heart-rate and SpO2 detection method.

• Reliable operation with ultra-low current draw, ensuring long battery life.

Specifications

• Power Supply: 3.3V to 5.5V

• Current Draw: ~600μA (during measurement)

• Standby Current: ~0.7μA

• Red LED Wavelength: 660nm

• IR LED Wavelength: 880nm

• Temperature Range: -40˚C to +85˚C

• Temperature Accuracy: ±1˚C

Pin Configuration

The sensor includes standard pins for VCC, GND, SDA, and SCL, which can be easily connected to most development boards via I2C. Thus, integration is straightforward and requires minimal setup.

In conclusion, the MAX30102 Heart Rate and Pulse Oximeter Sensor combines precision, energy efficiency, and versatility in one compact package. Therefore, whether you are developing a medical-grade device or an innovative fitness tracker, this sensor provides the reliability and performance needed for next-generation health applications.

• VIN is the power pin. You can connect it to 3.3V or 5V output from your Arduino.
• SCL is the I2C clock pin, connect to your Arduino’s I2C clock line.
• SDA is the I2C data pin, connect to your Arduino’s I2C data line.
• INT The MAX30102 can be programmed to generate an interrupt for each pulse. This line is open-drain, so it is pulled HIGH by the onboard resistor. When an interrupt occurs the INT pin goes LOW and stays LOW until the interrupt is cleared.
• IRD The MAX30102 integrates an LED driver to drive LED pulses for SpO2 and HR measurements. Use this if you want to drive the IR LED yourself, otherwise leave it unconnected.
• RD pin is similar to the IRD pin, but is used to drive the Red LED. If you don’t want to drive the red LED yourself, leave it unconnected.
• GND is the ground.

Applications:

• Fitness Assistant Devices
• Medical Monitoring Devices
• Home Heart Rate and SpO2 Monitoring

Package Include:

• 1x MAX30102 Heart Rate and Pulse Oximeter Sensor
• 2x set of header pins

DataSheet