Joined: 8 August 2008
Location: AT
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Hi I would like to verify if I received the correct sensors. Unfortunatly I did not find the description of the product code. How can I verify the chip is a 300 degree/s R2 type ? Cheers Michael

Joined: 28 November 2007
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Hello Michael,
An extra lid marking is used for the MLX90609-E2 (150deg/s range) and the MLX90609-R2 (300 deg/s range).
Let's place the MLX90609 to read the name by the normal way. In this case:
- MLX90609-N2 ( 75deg/s sensitivity) has no additional marking
- MLX90609-E2 (150deg/s sensitivity) has 2 gold dots at the left and right bottom corners
- MLX90609-R2 (300deg/s sensitivity) has 1 silver dot at the right top corner
However, this marking can be not reliable, as it can be erased.
If it happened, you can even manually estimate the sensitivity by turning your PCB with the MLX90609 over a given angle (e.g. 90 deg or halve or full turn) and then by integrating the value "OUTAR minus ZRO" over time. Most scopes (e.g. Agilent) have a built-in integration function. The result should give an angle with taking into account the actual MLX90609's sensitivity. As the angle is known one can derive the sensitivity.
Regards,
Nikolay