Melexis MLX90614 Plug & Play Thermometer in a TO-can

Melexis MLX90614 Digital Plug and Play Infrared Thermometer in a TO-can is an Infrared thermometer for non-contact temperature measurements. The MLX90614 integrates both the IR sensitive thermopile detector chip and the signal conditioning ASIC into the same TO-39 can. 

Installed in the MLX90614 are a low-noise amplifier and 17-bit ADC and powerful DSP. This enables the high-accuracy and resolution of the thermometer. The MLX90614 comes factory calibrated with a digital SMBus output that gives full access to the measured temperature in the complete temperature range(s) with a resolution of 0.02°C.

The digital output can be configured to be PWM. The 10-bit PWM is configured to continuously transmit the measured temperature in the range of -20 to 120°C, with a 0.14°C output resolution.


  • Factory calibrated IR thermometer with linear digital output
  • Small size TO-39 can, easy to integrate
  • Standard calibration in wide temperature range:
    • -40°C to +125°C for ambient temperature
    • -70°C to+ 380°C for object temperature
  • Better than 0.5°C accuracy in the range 0 to 50°C
  • 0.01°C readout resolution possible
  • High refresh rate
  • Easy emissivity correction
  • Continuous temperature readout through PWM (Pulse Width Modulated) output
  • 2-wire SMBus compatible interface for reading temperatures and sensor reconfiguration
  • Building block for sensor network with up to 100 thermometers
  • High-reliability and long-term stability
  • Available for 3V and 5V applications, easy to adapt for voltage sources in the range of 6V to 24V
  • Power saving mode for battery operation
  • Unique ID numbers in memory provide traceability
  • Single- or dual-zone thermometer versions available
  • RoHS compatible


  • High-precision contact-less temperature measurement;
  • Thermal Comfort sensor for Mobile Air Conditioning control system
  • Windshield defogging
  • Automotive blind angle detection
  • Temperature sensing element for residential, commercial and industrial building air conditioning
  • Presence detector
  • Fire/heat detection, alarm systems
  • Mobile telephones
  • Industrial temperature control
  • Temperature control in laser printers and copiers
  • Home appliances:
    • Microwave ovens
    • Cooking stove
    • Heater
    • Hair dryer
  • Healthcare
  • Livestock monitoring
  • Sensor grid for multi-zone temperature control
  • Thermal relay/alert

Block Diagram

Melexis MLX90614 Plug & Play Thermometer in a TO-can
Publicado: 2015-10-19 | Actualizado: 2023-01-06