on November 10th 70

MLX90640 Sensor: Alternatives, Specifications, and Datasheet

The MLX90640 sensor is a powerful, easy-to-use tool for capturing thermal images. Packed into a small TO39 case, it has a 32x24 pixel grid that can detect heat and show temperature patterns. This guide will break down how the sensor works, including its main features, what each pin does, and possible alternatives if you’re looking for other options. We’ll also talk about different ways you can use this sensor and some important tips to help you get the best results.

Catalog

What is the MLX90640 Sensor?

The MLX90640 sensor stands as a pinnacle in thermal imaging technology, boasting 768 FIR (Far Infrared Radiation) pixels. This intricate assembly offers detailed thermal imaging capabilities for capturing complex thermal patterns. Its applications are diverse, spanning predictive maintenance, building inspections, and medical diagnostics, each benefiting from its precision. At the heart of the MLX90640 are advanced ambient and supply sensors, which adeptly adjust measurements to account for environmental conditions, such as fluctuating temperatures. This responsiveness is advantageous, especially in dynamic outdoor environments where maintaining measurement accuracy amidst changeable conditions bolsters confidence in applications. The sensor's comprehensive array of 768 pixels facilitates the detection of minute temperature shifts, proving in contexts requiring detailed data like medical diagnostics, where precision can alter outcomes greatly.

MLX90640 Pin Configuration

Pin Number	Name	Description
1	SDA	I²C serial data (input / output)
2	VDD	Positive supply
3	GND	Negative supply (Ground)
4	SCL	I²C serial clock (input only)

MLX90640 Symbol and Footprint

MLX90640 Technical Specifications

Technical details, features, and specifications of the MLX90640, along with components that are comparable to the Melexis Technologies NV MLX90640ESF-BAA-000-TU.

Type	Parameter
Factory Lead Time	24 Weeks
Surface Mount	NO
Packaging	Bulk
Moisture Sensitivity Level (MSL)	Not Applicable
Type	Thermal
Terminal Position	BOTTOM
Number of Functions	1
Reach Compliance Code	compliant
Supply Voltage-Max (Vsup)	3.6V
Active Pixel Array	32H x 24V
Package / Case	TO-205AD, TO-39-3 Metal Can
Operating Temperature	-40°C~85°C
Part Status	Active
Number of Terminations	4
Voltage - Supply	2.9V~3.6V
Terminal Form	WIRE
Supply Voltage	3.3V
JESD-30 Code	R-XBCY-W4
Supply Voltage-Min (Vsup)	3V
RoHS Status	Non-RoHS Compliant

Block Diagram of the MLX90640

Features of the MLX90640

The MLX90640 showcases thoughtful engineering with its pre-set calibration and a compact 32x24 pixel infrared array, catering to diverse thermal imaging requirements while being budget-friendly. Its digital interface, compatible with I2C protocols, promotes seamless integration into an array of systems, enriching communication across various applications. With the option to adjust the refresh rate, you can adapt the sensor's performance to meet unique project specifications.

The digital interface aligns with standard I2C protocols, providing a robust pathway for data exchange and simplifying integration into diverse technological frameworks. This adaptability is advantageous in dynamic industries where seamless equipment interaction boosts productivity. Designed to perform optimally with a stable 3.3V power source, the MLX90640 maintains consistent operational efficiency across challenging temperature ranges from -40°C to 85°C. Its ability to function over this wide span supports various industrial, environmental, and uses.

With field of view options of 55°x35° and 110°x75°, the sensor addresses different observational needs. A wide field of view excels in capturing broad scenes, making it ideal for applications like security surveillance and environmental monitoring, while a narrower view is suitable for targeted tasks such as equipment troubleshooting. Covering a temperature spectrum from -40°C to 300°C, it adeptly handles both low and high-temperature scenarios. This broad temperature capability ensures its effectiveness in numerous industries, for instance, automotive and process control.

Applications of the MLX90640 Sensor

Precision in Non-Contact Temperature Sensing

The MLX90640 sensor stands as a notable development in non-contact temperature measurement. Its high accuracy and flexibility expand its usability across numerous applications, such as detecting movement and tracking occupancy. Particularly, its integration into intelligent air conditioning systems enhances the pursuit of thermal comfort and boosts energy efficiency.

Everyday Devices

An important role of this sensor emerges within household appliances like microwave ovens, where it ensures precise temperature management, thereby improving cooking outcomes. Within industrial environments, it assists in regulating the temperature of active machinery, thereby supporting operational stability and enhancing safety protocols.

Infrared Thermometry in Science and Medicine

The infrared thermometry capability of the MLX90640 finds purpose in a wide array of scientific and medical applications, where capturing precise temperature readings carries value.

Navigating Integration Challenges

The MLX90640 is accompanied by challenges. Successful integration hinges on a comprehensive understanding of installation parameters and surrounding environmental factors to maximize output. This comprehension is good for effective deployment. Additionally, tapping into the sensor's versatility often necessitates repeated testing and calibration to meet particular application demands, illustrating the need for adaptability when embedding technology.

MLX90640 Circuit Design

Alternatives to the MLX90640

Part	Description	Manufacturers	Compare
MLX90640ESF-BAA-000-TU	SENSOR DGTL -40C-85C TO39	Melexis	Current Part
MLX90640ESF-BAA-000-SP	SENSOR DGTL -40C-85C TO39	Melexis	MLX90640ESF-BAA-000-TU VS MLX90640ESF-BAA-000-SP

Comparing Thermal Sensors: AMG8833 and MLX90640

The MLX90640 stands out with a detailed resolution of 32x24 pixels, enabling thermal imagery ideal for settings requiring temperature visualization. On the other hand, the AMG8833 offers a simpler 8x8 pixel matrix, attracting projects keen on balancing between economic constraints and friendly design. The disparity in resolution between these sensors shapes their roles across various applications. With its 32x24 pixel array, the MLX90640 captures elaborate thermal patterns, making it suitable for tasks such as comprehensive environmental assessments or intricate analysis of machinery. Conversely, the 8x8 grid of the AMG8833 proves effective for presence sensing or basic thermal alert systems, where high resolution isn’t as important. The MLX90640’s advanced resolution carries a higher price tag, which could be a limiting factor for tighter budgets. Nonetheless, several projects have found success by embracing the AMG8833, which delivers sufficient performance at a lower cost, illustrating how financial limitations frequently influence sensor choices.

MLX90640 Manufacturer Information

Melexis has positioned itself as a frontrunner in the creation of novel semiconductor solutions for the advancement of future tech landscapes. The company places a strong emphasis on safety, hygiene, comfort, and ecological consciousness, positioning itself at the helm of technological progress. This spirit of commitment is observable in the assorted applications that harness the benefits of its cutting-edge technology. Melexis's influence reaches into various industries, each reaping the rewards of its semiconductor breakthroughs. Melexis is also dedicated to crafting environmentally friendly solutions. By placing energy efficiency and waste reduction at the forefront, the company aids in cultivating a greener tomorrow. Ongoing investment in research and development places Melexis as a leader of technological momentum. This dedication to innovation keeps the company at the forefront, capable of predicting market demands and addressing burgeoning challenges.

Datasheet PDF

MLX90640ESF-BAA-000-TU Datasheets:

FIR Selection Guide.pdf

MLX90640 Brief.pdf

MLX90640 Datasheet.pdf