MAX44000GDT+T Maxim Integrated Products, MAX44000GDT+T Datasheet - Page 13

• Manufacturer Part Number: MAX44000GDT+T
• Description: Optical Sensors - Industrial Digital Ambient Ligh t Sensor and Proximi
• Manufacturer: Maxim Integrated Products

Specifications of MAX44000GDT+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

This register controls the driver current setting and is used when the Proximity channel is enabled.
The 4 bits of DRV set the LED drive current according to Table 3.
The 2-bit ALSTIM[1:0] sets the integration time for ALS ADC conversion, as shown in Table 1.
Table 1. Ambient ADC Conversion Time
The 2-bit ALSPGA[1:0] sets the gain of the ambient light sensing measurement according to Table 2.
Table 2. Ambient Light Measurement Gain
Table 3. LED Drive Current Settings
Transmit Configuration
ALSTIM[1:0]
REGISTER
00
01
10
11
ALSPGA[1:0]
DRV[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
00
01
10
11
______________________________________________________________________________________
INTEGRATION TIME (ms)
Ambient and Infrared Proximity Sensor
B7
1.5625
6.25
100
25
B6
LED CURRENT (mA)
LED driver disabled
B5
10
20
30
40
50
60
70
B4
LUX/LSB
0.03125
0.125
FULL-SCALE ADC
0.5
4
B3
COUNTS
16,384
4096
1024
256
B2
DRV[3:0]
Transmit Configuration Register (0x03)
DRV[3:0]
Ambient Light Measurement Gain (ALSPGA)
1000
1001
1010
1011
1100
1101
1110
1111
B1
Ambient ADC Conversion Time (ALSTIM)
BIT RESOLUTION
B0
LED Drive Current Setting (DRV)
14
12
10
8
REGISTER
ADDRESS
RELATIVE LSB SIZE
0x03
LED CURRENT (mA)
128x
16x
RELATIVE LSB SIZE
1x
4x
POWER-ON
RESET
STATE
100
110
0x00
40
50
60
70
80
90
16x
64x
1x
4x
R/W
R/W
13