MLX75030 Datasheet, PDF (44/72 Pages) Melexis Microelectronic Systems – Universal ActiveLight Sensor Interface

MLX75030 Universal ActiveLight Sensor Interface
Datasheet
7.4.2. SetAH register
This register defines the DAC level for IR channel A.
SetAH
0x1
Bit
Read/Writ
e
Init
7
DACA7
R/W
0
6
DACA6
R/W
0
5
DACA5
R/W
0
4
DACA4
R/W
0
3
DACA3
R/W
0
2
DACA2
R/W
0
1
DACA1
R/W
0
0
DACA0
R/W
0
DACA<7:0>: the 8 bits of the DAC level for IR channel A
7.4.3. SetAL register
This register defines the gain and cut-off frequency adjustments for IR channel A.
SetAL
0x2
Bit
Read/Writ
e
Init
7
GAIN_A
DJ_
AA_A2
R/W
6
GAIN_A
DJ_
AA_A1
R/W
5
GAIN_A
DJ_
AA_A0
R/W
0
0
0
4
BW_
ADJ_
AA_A2
R/W
0
3
BW_
ADJ_
AA_A1
R/W
1
2
BW_
ADJ_
AA_A0
R/W
1
1
BW_
SEL_
LP_A1
R/W
0
0
BW_
SEL_
LP_A0
R/W
1
GAIN_ADJ_AA_A<2:0>: gain adjustment of anti-aliasing filter of channel A
GAIN_ADJ_
AA_A2
GAIN_ADJ_
AA_A1
GAIN_ADJ_
AA_A0
Gain
Gain (dB)
0
0
0
2.00
6.02
0
0
1
4.29
12.64
0
1
0
6.57
16.35
0
1
1
8.86
18.95
1
0
0
11.14
20.94
1
0
1
13.43
22.56
1
1
0
15.71
23.93
1
1
1
18.00
25.11
BW_ADJ_AA_A<2:0>: cut-off frequency adjustment of anti-aliasing filter of channel A
BW_ADJ_
BW_ADJ_
BW_ADJ_
3dB Cut-off
AA_A2
AA_A1
AA_A0
Frequency (kHz)
0
0
0
18
0
0
1
20
0
1
0
22.5
0
1
1
25
1
0
0
30
1
0
1
35
1
1
0
43
1
1
1
55
REVISION 005 – DECEMBER 2013
3901075030
PAGE 44 OF 72