MAX44000 Maxim, MAX44000 Datasheet - Page 5

• Manufacturer Part Number: MAX44000
• Description: MAX44000 combines a wide-dynamic range ambient light sensor with an integrated infrared proximity sensor, making it a perfect solution for touch-screen portable devices
• Manufacturer: Maxim

(V
Temperature limits are guaranteed by design.)
DD
1800
1600
1400
1200
1000
800
600
400
200
0
= 1.8V, T
0
ALSPGA[1:0] = 10
ALSTIM[1:0] = 00
LIGHT SENSITIVITY vs. LUX LEVEL
100
REFERENCE METER READING (LUX)
200 300 400 500
10
MIN
9
8
7
6
5
4
3
2
1
0
1.7
SUPPLY CURRENT vs. SUPPLY VOLTAGE
_______________________________________________________________________________________
– T
1.9
FLUORESCENT
MAX
2.1 2.3 2.5 2.7
Ambient and Infrared Proximity Sensor
600 700
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
INCANDESCENT
= -40 ° C to +85 ° C, unless otherwise noted. All devices are 100% production tested at T
T
T
A
A
STANDARD AMBIENT MODE
= +105°C
= -40°C
DARKROOM CONDITION
800
900
T
2.9 3.1
A
= +25°C
T
1000
A
= +85°C
3.3
3.5
150
100
Typical Operating Characteristics (continued)
50
0
3.7
0
PRXTIM, PRXPGA : 0x02 = 1111 xxxx
LED CURRENT: 0x03 = xxxx 1110 for 100mA
WITH NO REFLECTOR, PROX COUNT STAYED
AT 0 AT ALL lux LEVEL
WITH A BLACK GLASS AS REFLECTOR AND
lux LEVEL CHANGED FROM 50 TO 75000 lux
PROX COUNTS DROPPED BY 7% AT MID-ADC RANGE
PROX COUNT DROPPED BY 35% AT QUARTER
ADC RANGE
10k
20k
SUNLIGHT REJECTION
SUNLIGHT (LUX)
30k
BLACK GLASS REFLECTOR
40k
50k
NO REFLECTOR
60k
70k
11
10
80k
9
8
7
6
5
4
3
2
1
0
-40
OUTPUT ERROR vs. TEMPERATURE
STANDARD AMBIENT MODE
DARKROOM CONDITION
V
DD
-15
= 1.7 V TO 3.6V
100
90
80
70
60
50
40
30
20
10
0
-90
TEMPERATURE (°C)
10
-80
-70
-60
35
ROTATED WITH AXIS BETWEEN
-50
RADIATION PATTERN
-40
LUMINOSITY ANGLE (°)
PIN 1/2/3 AND 4/5/6
-30
60
-20
-10
0
85
10
20
30
110
40
A
50
= +25°C .
60
70
80
90
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