Far infrared thermal sensor array (32x24 RES) High SNR
MLX90642 Melexis
The MLX90642 is a fully calibrated 32x24 pixels thermal IR array imager delivered in an industry-standard 4-lead TO39 package with a digital I2C interface.
Top features
-
Best-in-class SNR
-
Noise Equivalent Temperature Difference (NETD) 0.065K @2Hz refresh rate
-
-
2 FoV options
-
45°x35°
-
110°x75°
-
-
Factory calibrated
-
32x24 pixels IR array
-
Contactless
-
Easy to integrate
-
Global shutter readout
-
Onboard temperature calculation
-
-
I2C compatible digital interface
-
Programmable refresh rate 2Hz…16Hz
-
3.3V supply voltage
-
Ambient operating temperature range from -40°C to 85°C
-
Object temperature -40°C…260°C
-
Pin compatible with MLX90640
-
Package TO39 (Industry-standard four lead)
Far infrared thermal sensor array (32x24 RES) High SNR - MLX90642
Product description
The MLX90642 is a thermal imaging array featuring a 32x24 pixel matrix with a high Signal-to-Noise ratio (SNR). This sensor provides a total of 768 Far-Infrared (FIR) pixels that translate into detailed thermal images, allowing for precise temperature mapping of the observed environment. Whether it's detecting subtle temperature variations in a complex industrial process or capturing the thermal profile of a room for occupancy monitoring, the MLX90642 delivers the necessary clarity.
To address the diverse needs of various applications, the sensor is offered with two distinct Field of View (FOV) options: 45°x35° and 110°x75°. This flexibility allows designers to select the optimal FOV for their specific use case.
A significant innovation within the MLX90642 is its onboard temperature calculation capability. This feature eliminates the requirement for an external microcontroller unit (MCU) for basic temperature matrix output, simplifying system design and reducing overall component costs.
The MLX90642 provides linearized Object Temperature (To), raw IR data, and Ambient Temperature (Ta) outputs. All of these data are stored within the device's internal RAM and is readily accessible through the industry-standard I2C interface, facilitating seamless integration with other system components.
Achieving a low Noise Equivalent Temperature Difference (NETD) of 65mK at a 2Hz refresh rate, the sensor ensures reliable performance even in challenging thermal environments. This sensitivity allows for the detection of subtle temperature variations, enabling applications such as early fire detection and precise thermal profiling.
The sensor utilizes a global shutter readout, ensuring that all pixels capture data simultaneously, minimizing motion artifacts and providing a consistent thermal image. Additionally, the refresh rate is configurable up to 16Hz, allowing for optimization based on the specific application requirements.
Applications examples
- High precision non-contact temperature measurements
- Food monitoring in Microwave ovens
- Intrusion / movement detection
- Temperature sensing in air conditioning
- Busbar monitoring
- Industrial temperature control of moving parts
- IR thermometer imager
Kitchen: temperature monitoring
Server room: people and fire detection
Features and benefits
-
Best-in-class SNR
-
Noise Equivalent Temperature Difference (NETD) 0.065K @2Hz refresh rate
-
-
2 FoV options
-
45°x35°
-
110°x75°
-
-
Factory calibrated
-
32x24 pixels IR array
-
Contactless
-
Easy to integrate
-
Global shutter readout
-
Onboard temperature calculation
-
-
I2C compatible digital interface
-
Programmable refresh rate 2Hz…16Hz
-
3.3V supply voltage
-
Ambient operating temperature range from -40°C to 85°C
-
Object temperature -40°C…260°C
-
Pin compatible with MLX90640
-
Package TO39 (Industry-standard four lead)
Documents and tools
Application flyer(s)
Application note(s)
Datasheet(s)
Package(s)
Product flyer(s)
Selection guide(s)
Software
IC handling and assembly
Related tech talks
Videos
Melexis Redefines Thermographic Sensing with the MLX90642 32x24 IR Array
Melexis introduces the MLX90642, a revolutionary thermographic sensor featuring a 32x24 pixel InfraRed (IR) array that redefines market expectations. It offers a drastically improved signal-to-noise ratio, global shutter readout, and onboard temperature calculation at a competitive price point. The MLX90642 improves performance in smart cooking, HVAC, fire hazard prevention, power electronics overheating detection, and hotspot localization.
People detection using far infrared (FIR) thermal sensor array
This movie illustrates the use of our people detection sensor, ceiling mounted in an office meeting room.
How field of view for infrared temperature sensors is determined
In this animated video, Robbie Vandeweerdt (Applications Engineer), explains how the field of view or field of vision (abbreviated FOV) for far infrared temperature sensors is determined.
Swipe detection with infrared array and AI algorithm (MLX90640)
In this demo, we demonstrate gesture recognition (swipe) using the MLX90640 infrared sensor array and an AI algorithm.
Finger counting with infrared array and AI algorithm (MLX90640)
In this demo, we demonstrate finger counting using the MLX90640 infrared sensor array and an AI algorithm.
