Datasheet

Ambient and Infrared Proximity Sensor

Ambient ADC Conversion Time (ALSTIM)

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

Ambient Light Measurement Gain (ALSPGA)

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

Transmit Configuration Register (0x03)

This register controls the driver current setting and is used when the Proximity channel is enabled.

LED Drive Current Setting (DRV)

The 4 bits of DRV set the LED drive current according to Table 3.

Table 3. LED Drive Current Settings

ALSTIM[1:0] INTEGRATION TIME (ms)

FULL-SCALE ADC

COUNTS

BIT RESOLUTION RELATIVE LSB SIZE

00 100 16,384 14 1x

01 25 4096 12 4x

10 6.25 1024 10 16x

11 1.5625 256 8 64x

ALSPGA[1:0] LUX/LSB RELATIVE LSB SIZE

00 0.03125 1x

01 0.125 4x

10 0.5 16x

11 4 128x

ADDRESS

POWER-ON

RESET

STATE

R/W

Transmit Configuration DRV[3:0] 0x03 0x00 R/W

DRV[3:0] LED CURRENT (mA) DRV[3:0] LED CURRENT (mA)

0000 LED driver disabled 1000 40

0001 10 1001 50

0010 20 1010 60

0011 30 1011 70

0100 40 1100 80

0101 50 1101 90

0110 60 1110 100

0111 70 1111 110

MAX44000

Maxim Integrated