Pulse Oximeter Heart Rate Sensor Module MAX30100

The MAX30100 is a compact sensor module that measures both heart rate and blood oxygen saturation (SpO₂). Using integrated red and infrared LEDs along with a photodetector, it detects changes in light absorption caused by blood flow in tissues, making it ideal for health monitoring applications.

Key Features:

• Measures Heart Rate (30–200 BPM) and SpO₂ (70–100%)
• Ultra-low power consumption — only 600μA in measurement mode, 0.7μA in standby
• High sample rate for fast, real-time data output
• Integrated ambient light cancellation for improved accuracy
• On-chip temperature sensor (±1°C)
• Compact and suitable for wearable devices like smartwatches and fitness trackers

Specifications:

• Operating Voltage: 1.8V–5.5V
• Current Consumption: ~20mA during operation
• Interface: I²C
• Temperature Range: -40°C to +85°C
• ADC Resolution: 14-bit
• LED Drive Current: Up to 50mA
• IR LED Wavelength: 870–900nm
• Red LED Wavelength: 650–670nm

Applications:

• Wearable fitness trackers
• Medical monitoring devices
• Fitness assistant gadgets

Usage Tip: For accurate readings, place the sensor on a finger, earlobe, or similar area with good blood flow, and minimize movement during measurement.