Datasheet

MLX90640 32x24 IR array
Datasheet
Page 34 of 60
REVISION 11 – 3 AUGUST 2018
Alpha_CP_SP_0
–
10 bits
Alpha_CP_SP_0 = 4.0745362639427E
-
09
0x243A
CP_off_delta (
SP_1
-
SP_0
)
–
6 bits
Offset_CP_SP_0 – 10 bits
0xFBB5
CP_off_delta
(
SP_1
-
SP_0
)
=
-
2
Offset_CP_SP_0 = -75
0x243B
K
v
_
CP
–
8 bits
Kta_CP – 8 bits
0x044B
K
v
_
CP
=
0.5
Kta_CP = 0.00457763671875
0x243C
KsTa
–
8 bits
TGC – 8 bits
0xF020
KsTa =
-
0.001953125
TGC = 1
0x243D
KsT
o
2
(0°C…
C
T
3
°C
)
–
8 bits
KsTo1 (<0°C) – 8 bits
0x9797
KsT
o
2
(0°C…C
T
3
°C
)
=
-
0.0008010864
KsTo1 (<0°C) = -0.0008010864
0x243E
KsTo
4
(CT
4
°C…)
–
8 bits
KsTo3 (CT3°C…CT4°C) – 8 bits
0x9797
KsTo
4
(CT
4
°C…) =
-
0.0008010864
KsTo3 (CT3°C…CT4°C) = -0.0008010864
0x243F
Step
–
2
bits
CT4 – 4 bits
CT3 – 4 bits
KsTo_scale – 4 bits
0x2889
Step
= 2
0°C
CT4 = 320°C
CT3 = 160°C
KsTo_scale = 17
Table 12 Calculation example calibration data