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MAX44000
Ambient and Infrared Proximity Sensor
Typical Operating Characteristics (continued)
(V DD = 1.8V, T MIN – T MAX = -40°C to +85°C, unless otherwise noted. All devices are 100% production tested at T A = +25°C.
Temperature limits are guaranteed by design.)
1800
LIGHT SENSITIVITY vs. LUX LEVEL
150
SUNLIGHT REJECTION
100
RADIATION PATTERN
1600
1400
1200
1000
800
600
400
200
0
ALSTIM[1:0] = 00
ALSPGA[1:0] = 10
FLUORESCENT
INCANDESCENT
0 100 200 300 400 500 600 700 800 900 1000
REFERENCE METER READING (LUX)
100
50
0
NO REFLECTOR
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
BLACK GLASS REFLECTOR
0 10k 20k 30k 40k 50k 60k 70k 80k
SUNLIGHT (LUX)
90
80
70
60
50
40
30
20
10
0
ROTATED WITH AXIS BETWEEN
PIN 1/2/3 AND 4/5/6
-90 -70 -50 -30 -10 10 30 50 70 90
-80 -60 -40 -20 0 20 40 60 80
LUMINOSITY ANGLE (°)
10
SUPPLY CURRENT vs. SUPPLY VOLTAGE
vs. TEMPERATURE
11
OUTPUT ERROR vs. TEMPERATURE
9
8
7
T A = +105°C
T A = +85°C
10
9
8
STANDARD AMBIENT MODE
DARKROOM CONDITION
V DD = 1.7 V TO 3.6V
6
5
4
3
T A = -40°C
T A = +25°C
7
6
5
4
3
2
1
STANDARD AMBIENT MODE
DARKROOM CONDITION
2
1
0
1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7
0
-40
-15
10
35
60
85
110
Maxim Integrated
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
5
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