Far infrared thermal sensor array (16x12 RES)
MLX90641 Melexis
Suitable for demanding thermal environments with extended operating temperature range (-40 °C to +125 °C).
Top features
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Extended operating temperature range (-40 °C to +125 °C)
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Enhanced thermal stability
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Low noise equivalent temperature difference (NETD) 0.1K RMS at 4 Hz refresh rate
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Evaluation board available
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I²C compatible digital interface
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Two different field of view (FoV) options: standard 55 °x 35 ° and 110 °x 75 ° wide angle
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Measurement object temperature between -40 to +300 °C
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A typical target object temperature accuracy of 1 °C
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No re-calibration needed
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4-pin TO39 package incorporating the requisite optics
- Programmable refresh rate (in several steps between 0.5 and 64 Hz)
Far infrared thermal sensor array (16x12 RES) - MLX90641
Product description
The MLX90641 is a 16x12 pixel IR array housed in an industry standard 4-lead TO39 package and is able to accurately measure temperatures in the range of -40 °C to +300 °C. The factory-calibrated devices ensure an accuracy of 1 °C in typical measurement conditions. The high accuracy is further supported by a Noise Equivalent Temperature Difference (NETD) of 0.1 K RMS at 4 Hz refresh rate. The refresh rate is programmable in steps from 0.5 to 64 Hz.
Two different field of view (FoV) options are available, a standard 55 ° x 35 ° and a wide angle 110 ° x 75 °. The device is simple to use, operating from a single 3.3 V supply and storing all results in internal RAM for access via an I²C compatible digital interface. A proprietary algorithm ensures high thermal stability, even in conditions where the temperature is changing rapidly. The device's robustness, combined with the extended operating temperature range (-40 °C to +125 °C) enables applications in harsh thermal environments such as cooking, industrial and automotive applications.
Features and benefits
-
Extended operating temperature range (-40 °C to +125 °C)
-
Enhanced thermal stability
-
Low noise equivalent temperature difference (NETD) 0.1K RMS at 4 Hz refresh rate
-
Evaluation board available
-
I²C compatible digital interface
-
Two different field of view (FoV) options: standard 55 °x 35 ° and 110 °x 75 ° wide angle
-
Measurement object temperature between -40 to +300 °C
-
A typical target object temperature accuracy of 1 °C
-
No re-calibration needed
-
4-pin TO39 package incorporating the requisite optics
- Programmable refresh rate (in several steps between 0.5 and 64 Hz)
Documents and tools
Application flyer(s)
Datasheet(s)
Package(s)
Product flyer(s)
Selection guide(s)
Videos
High operating temperature far infrared (FIR) thermal sensor array
The new high operating temperature thermal sensor array MLX90641 (16x12 pixels) extends critical figures of merit to further advance Melexis’ technical lead in far infrared sensing. The MLX90641 is suitable for conventional and microwave ovens, industrial applications (like detection of power electronics overheating) and automotive.
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.
