MLX90621 datasheet(36/44 Pages) MELEXIS

36 / 44 page

MLX90621

16x4 IR array

Datasheet

39001090621

Page 36 of 44

Datasheet IR16x4

Rev 3.0

15 September 2016

The higher resolution limits the maximum object temperature range of the MLX90621.

Configuration register[5:4],

bin

Resolution

Maximum object temperature,

°C

BAA

BAB

BAD

15 bits

~750

~950

~1100

16 bits

~550

~750

~900

17 bits

~450

~600

~700

18 bits

~320

~450

~500

Table 21 Maximum object temperature at different resolution settings

NOTE: If object temperature exceeds the maximum object temperature specified for the corresponding resolution,

the MLX90621 may return invalid data due to measurements overflow.

Field Of View (FOV)

10.3.

Figure 29: Field Of View measurement

The specified FOV is calculated for the wider direction, in this case for the 16 pixels.

Angular alignment must be 5% of specified FOV and will be valid for both directions. For example for the 60° FOV in

the wider direction will come with 16° in the shorter direction.

FOV

X direction

Y direction

Typ

MLX90621-ESF-BAA

120

MLX90621-ESF-BAB

MLX90621-ESF-BAD

Table 22 Available FOV options

Point heat source

Rotated sensor

Angle of incidence

100%

50%

Sensitivity

Field Of View

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