MLX75031 Datasheet, PDF (50/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.13.11/12 Calib1/Calib2 register
These registers contain the calibration settings for the temperature sensor.
Bit
7
6
5
4
3
210
Calib1
TRIM_
TRIM_
TRIM_
TRIM_
TRIM_
T_SLOPE4 T_SLOPE3 T_SLOPE2 T_SLOPE1 T_SLOPE0
-
-
-
0xB Read/Write
R
R
R
R
R
RRR
Init
x
x
x
x
x
000
TRIM_T_SLOPE<4:0>: defines the slope of the temperature sensor
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 23.
Calib1 - TRIM_T_SLOPE<4:0>
Slope
Slope
Dec
Bin (LSB/Kelvin) Dec
Bin (LSB/Kelvin)
0
0
-51
16
10000
-67
1
1
-52
17
10001
-68
2
10
-53
18
10010
-69
3
11
-54
19
10011
-70
4
100
-55
20
10100
-71
5
101
-56
21
10101
-72
6
110
-57
22
10110
-73
7
111
-58
23
10111
-74
8
1000
-59
24
11000
-75
9
1001
-60
25
11001
-76
10
1010
-61
26
11010
-77
11
1011
-62
27
11011
-78
12
1100
-63
28
11100
-79
13
1101
-64
29
11101
-80
14
1110
-65
30
11110
-81
15
1111
-66
31
11111
-82
Table 23 : 5-Bit temperature sensor slope information as it is stored in the calib1 register.
Bit
7
Calib2
-
0xC Read/Write R
Init
0
6
5
4
3
2
1
0
-
TRIM_ TRIM_ TRIM_ TRIM_ TRIM_ TRIM_
TEMP5 TEMP4 TEMP3 TEMP2 TEMP1 TEMP0
R
R
R
R
R
R
R
0
x
x
x
x
x
x
Calib2<7:6>: not implemented, read as '0'
TRIM_TEMP<5:0>: defines the calibration settings of the temperature sensor
REVISION 001 – JANUARY, 2013
39010xxxxx
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