MLX75031 Datasheet, PDF (49/67 Pages) Melexis Microelectronic Systems – Optical Gesture & Proximity Sensing IC

MLX75031
Optical Gesture & Proximity Sensing IC
with Integrated LED Drivers
Datasheet
8.10.9. Reserved register
This register is used for internal evaluation purposes.
8.10.10. GainBuf register
This register contains the gain settings of the ADC input buffer. The use of this buffer is depending on bit
'Unity_Gain' in the register 'SetAna'. It is recommended to keep the GainBuf register to its default value.
Please contact Melexis before changing it.
Bit
7
6
5
4
3
2
1
0
GainBuf
-
-
-
GAIN_ GAIN_ GAIN_ GAIN_ GAIN_
BUF4 BUF3 BUF2 BUF1 BUF0
0xA Read/Write R
R
R
R/W R/W R/W R/W R/W
Init
0
0
0
1
1
0
1
0
GainBuf<7:5>: not implemented, read as '0'
GAIN_BUF<4:0>: defines the gain setting of the ADC input buffer
GAIN_ GAIN_ GAIN_ GAIN_ GAIN_
BUF4 BUF3 BUF2 BUF1 BUF0
Gain
0
0
0
0
1
2
0
0
0
1
0
1
0
0
0
1
1
0.67
0
0
1
0
0
0.5
0
0
1
0
1
0.4
0
0
1
1
0
0.33
0
0
1
1
1
0.29
0
1
0
0
0
0.25
0
1
0
0
1
0.22
0
1
0
1
0
0.2
1
0
0
0
1
10
1
0
0
1
0
5
1
0
0
1
1
3.33
1
0
1
0
0
2.5
1
0
1
0
1
2
1
0
1
1
0
1.67
1
0
1
1
1
1.43
1
1
0
0
0
1.25
1
1
0
0
1
1.11
1
1
0
1
0
1
REVISION 001 – JANUARY, 2013
39010xxxxx
Page 49 of 49