Melexis MLX90640 Far Infrared Thermal Sensor
Melexis MLX90640 Far Infrared Thermal Sensor is a fully calibrated 32 x 24 pixel thermal IR array in a compact, industry-standard, 4-lead TO39 package featuring a digital interface. The MLX90640 contains 768 FIR (Far Infrared) pixels. An ambient sensor is integrated to measure the ambient temperature of the chip and a supply sensor to measure the VDD. The outputs of all IR, Ta, and VDD sensors are stored in internal RAM and accessible through I2C.
The MLX90640 has a -40°C to 85°C operational temperature range and can measure object temperatures between -40°C and 300°C. Maintaining high levels of precision across its full measurement scale, this Far Infrared sensor delivers a typical target object temperature accuracy of ±1°C.
The MLX90640 Sensor Array is ideal for safety and convenience applications, including fire prevention systems, smart buildings, intelligent lighting, IP/surveillance cameras, HVAC equipment, and vehicle seat occupancy detection.
Features
- Small size, low cost 32x24 pixels IR array
- Easy to integrate
- Industry-standard four lead TO39 package
- Factory calibrated
- Noise Equivalent Temperature Difference (NETD): 0.1K RMS @1Hz refresh rate
- I2C compatible digital interface
- Programmable refresh rate 0.5Hz to 64Hz
- 3.3V supply voltage
- Current consumption is less than 23mA
- 2 FoV (Field of View) options: 55° x 35° and 110° x 75°
- Operating temperature: -40°C to 85°C
- Target temperature: -40°C to 300°C
- RoHS Compliant
Applications
- High precision non-contact temperature measurements
- Intrusion / Movement detection
- Presence detection / Person localization
- The temperature sensing element for residential, commercial, and industrial building air conditioning
- Thermal Comfort sensor in automotive Air
- Conditioning control system
- Passenger classification
- Microwave ovens
- Industrial temperature control of moving parts
- Visual IR thermometers
Videos
Block Diagram
Development Tools
Melexis EVB90640 Evaluation Board for MLX90640
Demonstration and configuration tool for the MLX90640 Far Infrared Thermal Sensor Array.
Adafruit MLX90640 IR Thermal Camera Breakout Boards
Contains a 24x32 array of IR thermal sensors that can return an array of 768 readings over I2C.
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