MAX30100 Pulse Oximeter Heart Rate Sensor Module

MAX30100 Pulse Oximeter & Heart Rate Sensor Module is an all-in-one optical module that integrates a pulse oximeter and heart rate sensor in a compact form factor. Designed for wearable devices and health monitoring projects, it accurately measures SpO₂ and heart rate using photoplethysmography (PPG) sensors and built-in LEDs.

Key Features:

• Dual Function: Combines pulse oximetry (SpO₂) and heart rate measurement in one module.
• Compact & Integrated: Built-in IR and red LEDs plus a photodetector.
• I²C Interface: Simple two-wire data interface (SDA, SCL).
• Low Power Design: Efficient operation—ideal for battery-powered and wearable projects.
• Onboard IR Compensation: Includes ambient light cancellation for cleaner signal.

Technical Specifications:

• Supply Voltage: 1.8V to 3.3V (commonly 3.3V)
• Current Consumption: ~600 µA in active mode
• Measurement Range: 0–100% SpO₂; capable of detecting heart rates from 30 bpm to 240 bpm
• Sampling Rate: Up to 100 Hz
• I²C Speed: Up to 400 kHz
• Resolution: 16-bit ADC for both LEDs

Mechanical Specifications:

• Board Material: FR4 PCB with gold-plated pads
• LED & Sensor Encapsulation: Epoxy over LEDs and photodiode
• Mounting: Through-hole module—solder onto development boards

Dimensions:

• Module Size: Approximately 22mm × 16mm
• Pin Pitch: Standard 2.54mm (0.1″) for easy breadboard or PCB use

Pinout and Wiring:

• VIN/VCC: 1.8V–3.3V supply input
• GND: Ground
• SCL: I²C clock line
• SDA: I²C data line
• INT (optional): Interrupt pin for data-ready signaling (if available)

Datasheet Reference:

• Search online for “MAX30100 datasheet by Maxim Integrated” to get detailed electrical characteristics and timing diagrams.

Applications:

• Wearable Health Devices: Ideal for smartwatches, fitness trackers, and wellness wearables.
• Medical Monitoring: Home-use systems for heart rate and oxygen saturation tracking.
• Fitness Equipment: Integrated into exercise machines to display real-time vitals.
• DIY Electronics: Maker projects and experimentation with microcontrollers like Arduino, ESP32, Raspberry Pi Pico.

Equivalent Models:

• MAX30102: Improved version with IR compensation and higher power efficiency.
• MAX30105: Includes red, IR, green LEDs for additional heart rate and proximity sensing.
• MAXREFDES117#: Complete reference design module based on MAX30102, ready for evaluation.

Package Includes:

• 1 × MAX30100 Pulse Oximeter & Heart Rate Sensor Module