ISL29018 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
ISL29018 Datasheet PDF : 15 Pages
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ISL29018
Typical Performance Curves VSUP (VDDD, VDDA) = 3V, REXT = 499kΩ
1.2
SUN
1.0
INCANDESCENT
1.2
AMBIENT
1.0
LIGHT
SENSING
0.8
0.8
HALOGEN
0.6
0.6
0.4
FLUORESCENT
0.4
0.2
0.2
0
HUMAN EYE RESPONSE
IR AND
PROXIMITY
SENSING
0
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
FIGURE 5. SPECTRUM OF FOUR LIGHT SOURCES
-0.2
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
FIGURE 6. SPECTRAL RESPONSE FOR AMBIENT LIGHT
SENSING AND PROXIMITY SENSING
RADIATION PATTERN
LUMINOSITY
20° 10° 0°
30°
ANGLE 40°
50°
10° 20°
30°
40°
50°
60°
60°
70°
70°
80°
80°
90°
90°
0.2 0.4 0.6 0.8 1.0
RELATIVE SENSITIVITY
FIGURE 7. RADIATION PATTERN
1000
900
800
VDD = 3V
RANGE = 1000 LUX
16-BIT ADC
INCANDESCENT
65535
700
HALOGEN
600
500
32768
400
FLUORESCENT
300
200
100
0
0
1000 LUX
Ecal = 216 x DATA
0
100 200 300 400 500 600 700 800 900 1000
LUX METER READING (LUX)
FIGURE 8. SENSITIVITY TO THREE LIGHT SOURCES
10000
1000
100
92% BRIGHTNESS PAPER
18% GRAY CARD
10
ESD BLACK FOAM
1
0
20
40
60
80
100
DISTANCE (mm)
FIGURE 9. ADC OUTPUT vs DISTANCE WITH DIFFERENT
OBJECTS IN PROXIMITY SENSING
4500
4000
3500
3000
2500
2000
IIRLED = 100mA
IIRLED = 50mA
IIRLED = 25mA
IIRLED = 12.5mA
1500
1000
500
0
0 10 20 30 40 50 60 70 80 90
DISTANCE (mm)
FIGURE 10. ADC OUTPUT vs DISTANCE WITH DIFFERENT
LED CURRENT AMPLITUDES IN PROXIMITY
SENSING
12
FN6619.1
February 11, 2010
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