MLX90614 Contactless Temperature Sensor Module

MLX90614 Contactless Temperature Sensor Module delivers precise non-contact temperature measurement using advanced infrared sensing technology. Engineers integrate it into medical, industrial, and consumer devices where fast and accurate thermal monitoring without physical contact is essential.

Key Features:

• Non-Contact Measurement: Detects temperature from a distance using infrared sensing.
• Wide Measurement Range: Measures from −70 °C to +380 °C with reliable accuracy.
• High Accuracy: Achieves ±0.5 °C accuracy in the human body temperature range.
• Digital Output: Provides temperature data through I²C or PWM interfaces.
• Factory-Calibrated: Offers plug-and-play accuracy without external calibration.
• Low Power Consumption: Suitable for portable and battery-powered applications.

Technical Specifications:

• Operating Voltage: 3.3 V to 5 V DC
• Object Temperature Range: −70 °C to +380 °C
• Ambient Temperature Range: −40 °C to +125 °C
• Accuracy: ±0.5 °C (typical at 0 °C to +50 °C)
• Resolution: 0.02 °C
• Interface: I²C (SMBus compatible) or PWM output
• Field of View (FOV): Standard 35° (varies by lens option)

Mechanical Specifications:

• Module Type: Integrated MLX90614 sensor on breakout board
• Connector: Standard 4-pin header (VCC, GND, SDA, SCL)
• Lens Material: IR-transparent thermopile lens
• PCB Material: FR4 with solder-masked surface

Dimensions:

• Module Size: Approx. 15 mm × 17 mm (depends on breakout variant)
• Pin Pitch: 2.54 mm standard header spacing
• Sensor Package: TO-39 metal can integrated on PCB

Pinout and Wiring:

• Pin 1 (VCC): Supply voltage (3.3 V–5 V)
• Pin 2 (GND): Ground reference
• Pin 3 (SDA): Data line for I²C communication
• Pin 4 (SCL): Clock line for I²C communication
• Wiring Note: Use pull-up resistors (4.7 kΩ typical) on SDA and SCL lines for I²C stability.

Datasheet Reference:

• Download the official MLX90614 datasheet from Melexis for detailed specifications, timing diagrams, and application notes.

Applications:

• Medical Thermometers: Enable fast and accurate fever detection without contact.
• Industrial Safety: Monitor equipment surface temperature in real time.
• Consumer Electronics: Add temperature sensing to smart home devices.
• Automotive: Integrate into climate control and cabin temperature monitoring systems.
• IoT Projects: Provide thermal data to microcontrollers and single-board computers.

Equivalent Models:

• GY-906: Common breakout board version of MLX90614.
• AMG8833 Grid-EYE: Alternative for thermal imaging arrays.
• MLX90615: Smaller package variant with similar features.

Package Includes:

• 1 x MLX90614 Contactless Temperature Sensor Module