MLX90615 Non-Contact Infrared Thermometer Module with SMBus Interface

The MLX90615 is a digital infrared thermometer module designed for accurate non-contact temperature measurement in medical, industrial, and consumer applications. The module integrates an infrared-sensitive thermopile detector and a signal conditioning chip in a single TO-46 package, delivering a complete sensing solution without the need for external optical components. Factory calibration over a wide temperature range ensures reliable readings, with the sensor measuring ambient temperatures from -40°C to +85°C and object temperatures from -40°C to +115°C. This non contact temperature sensor achieves a readout resolution of 0.02°C and an accuracy of ±0.5°C in the 0°C to +50°C range for both ambient and object temperatures, making it suitable for applications that require precise thermal data. Communication is handled through an SMBus-compatible digital interface, and the device also offers a PWM output for continuous reading without bus communication. The MLX90615 infrared thermometer operates from a 3V supply and includes a power-saving mode for battery-powered designs. Embedded emissivity compensation and a low-noise amplifier with a 16-bit ADC and DSP unit contribute to stable and repeatable measurements. This SMBus temperature sensor is commonly used in handheld thermometers, ear thermometers, home appliances with temperature control, healthcare monitoring, and livestock management. Because the module performs non-contact measurement, it avoids contamination and mechanical wear associated with contact sensors, and it can be deployed in environments where physical probe placement is impractical.