MLX75030 Datasheet, PDF (51/72 Pages) Melexis Microelectronic Systems – Universal ActiveLight Sensor Interface

MLX75030 Universal ActiveLight Sensor Interface
Datasheet
7.4.11. Calib1/Calib2 register
These registers contain the gain settings of the bandgap temperature coefficient correction and the temperature sensor.
Bit
7
6
5
4
3
210
Calib1
TRIM_
TRIM_
TRIM_
TRIM_
TC_BGI4 TC_BGI3 TC_BGI2 TC_BGI1
TRIM_
TC_BGI0
-
-
-
0xB
Read/Writ
e
R
R
R
R
R
RRR
Init
x
x
x
x
x
000
TRIM_TC_BGI<4:0>: defines the TC correction of the bandgap current
Calib1<2:0>: not implemented, read as '0'
The Calib1 register is used to indicate the slope of the temperature sensor curve in LSB/Kelvin. The slope is calculated out of a 2-
point measurement of the temperature curve and is permanently programmed in the OTP by means of a 5-Bit word and
accessible via the Calib1 register, see Table 22.
Calib1 - TRIM_TC_BGI
Dec
Bin
0
0
1
1
2
10
3
11
4
100
5
101
6
110
7
111
8
1000
9
1001
10
1010
11
1011
12
1100
13
1101
14
1110
15
1111
16
10000
17
10001
18
10010
19
10011
20
10100
21
10101
22
10110
23
10111
24
11000
25
11001
26
11010
27
11011
28
11100
29
11101
30
11110
31
11111
Slope (LSB/Kelvin)
-51
-52
-53
-54
-55
-56
-57
-58
-59
-60
-61
-62
-63
-64
-65
-66
-67
-68
-69
-70
-71
-72
-73
-74
-75
-76
-77
-78
-79
-80
-81
-82
Table 22 : 5-Bit temperature sensor slope information as it is stored in the calib1 register.
REVISION 005 – DECEMBER 2013
3901075030
PAGE 51 OF 72