Melexis Microelectronic Integrated Systems designs, manufactures and markets advanced mixed-signal semiconductor devices with core expertise in automotive electronics. Melexis’ capabilities developed in serving automotive segment are sustaining the expansion into Application Specific Standard Products for industrial and consumer applications.
Melexis is an integrated circuits’ supplier that innovates in the area of sensors and programmable sensor systems, communication, and actuators.
MLX90614 - Single and Dual Zone Infrared Thermometer
The MLX90614 is an Infrared thermometer for non contact temperature measurements. The MLX90614 integrates two Melexis chips in TO-39 package: the IR sensitive thermopile detector (MLX81101) and the signal conditioning specially designed to process the output of IR sensor (MLX90302).
The MLX90614 is factory calibrated in wide temperature ranges: -40 to 125 °C for the ambient temperature and -70 to 382.2 °C for the object temperature.
The calculated object and ambient temperatures are available in RAM of MLX90302 with resolution of 0.01 °C. They are accessible by 2 wire serial SMBus compatible protocol (0.02°C resolution) or via 10-bit PWM output of the device.
The MLX90614 measures the average temperature PWM of all objects in the sensor’s Field Of View (FOV) with standard accuracy of ±0.5ºC around room temperatures. A special version for medical applications is available with accuracy of ±0.1ºC in a limited temperature range around the human body temperature. For further details on sensor’s accuracy please, refer to product datasheet.
The 10-bit PWM is as a standard configured to transmit continuously the measured object temperature in the range of -20 to 120 °C with an output resolution of 0.14 °C. The PWM could be customized for virtually any range desired by the customer by changing the content of 2 EEPROM cells. This has no effect on the factory calibration of the device.
The PWM pin can also be configured to act as a thermal relay (input is To), thus allowing for an easy implementation of thermostat or temperature alert (freezing/boiling) applications. The temperature threshold is user programmable. In a SMBus system this feature can act as a processor interrupt.
The thermometer is available both in 5V or 3V supply voltage options. An optical filter (long-wave pass) that cuts off the visible and near infrared radiant flux is integrated in the package to provide ambient and sunlight immunity.
The MLX90614ESF-ACF is a TO-39 5V Gradient Compensated SPI Infrared Thermometer with 10° FOV.
- Type: Digital
- Operating Temp Range: -40 to +85 °C
- Operating Temp Range (°F):
- Supply Voltage: 4.5 to 5.5 V
- Output Current-Max: 13.5 mA