Infrared Thermometer - MLX90614

The Sparkfun Melexis MLX90614ESF-BAA is a remarkable infrared thermometer that offers non-contact temperature sensing. With an internal 17-bit ADC and a powerful DSP, this device takes accuracy and resolution to a whole new level. It is perfect for a wide range of applications, such as body temperature measurement and movement detection.

The MLX90614 offers two types of output: PWM and SMBus (also known as TWI, I²C). The PWM output is 10-bit and provides a resolution of 0.14°C, while the TWI interface boasts a resolution of 0.02°C. This thermometer is factory calibrated for wide temperature ranges: -40 to 85°C for ambient temperature and -70 to 382.2°C for object temperature. The measured value is the average temperature of all objects within the sensor's field of view. The MLX90614 offers a standard accuracy of 0.5°C around room temperatures.

The MLX90614 device is housed in an industry standard TO-39 package, and the version carried by Sparkfun operates on 3V.

Features:

• Compact size and cost-effective
• Easy to integrate into different applications
• Factory calibrated for wide temperature range:
  • -40 to +85°C for sensor temperature
  • -70 to +380°C for object temperature
• SMBus compatible digital interface
• Customizable PWM output for continuous reading
• High accuracy of 0.5°C over wide temperature range (0 to +50°C for both Ta and To)
• Measurement resolution of 0.02°C
• Available in single and dual zone versions
• Simple adaptation for 8 to 16V applications
• Power saving mode
• Various package options for versatile applications and measurements
• Automotive grade

Documents:

• Hookup Guide
• Datasheet
• MLX90614 Product Information
• bildr blog - MLX90614
• GitHub (Library)