ISL29011_14 Datasheet, PDF (15/19 Pages) Intersil Corporation – Digital Ambient Light Sensor and Proximity Sensor with Interrupt Function

ISL29011
Typical Performance Curves V_SUP (V_DDD, V_DDA) = 3V, R_EXT = 499kΩ
1.2
SUN
1.0
INCANDESCENT
0.8
HALOGEN
0.6
1.2
1.0
AMBIENT
LIGHT
SENSING
0.8
0.6
HUMAN EYE RESPONSE
IR AND
PROXIMITY
SENSING
FLUORESCENT
0.4
0.4
0.2
0.2
0
0
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
-0.2
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
FIGURE 7. SPECTRUM OF FOUR LIGHT SOURCES
FIGURE 8. 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 9. RADIATION PATTERN
1000
900
800
V_DD = 3V
RANGE = 1000 LUX
16-BIT ADC
INCANDESCENT
65535
700
HALOGEN
600
500
32768
400
300
FLUORESCENT
200
100
E_cal
1000 LUX
= ₂₁₆
x
DATA
0
0
0 100 200 300 400 500 600 700 800 900 1000
LUX METER READING (LUX)
FIGURE 10. SENSITIVITY TO THREE LIGHT SOURCES
10000
1000
100
92% BRIGHTNESS PAPER
18% GRAY CARD
10
ESD BLACK FOAM
10
20
40
60
80
100
DISTANCE (mm)
FIGURE 11. ADC OUTPUT vs DISTANCE WITH DIFFERENT OBJECTS
IN PROXIMITY SENSING
4500
4000
3500
3000
2500
2000
I_IRLED = 100mA
I_IRLED = 50mA
I_IRLED = 25mA
I_IRLED = 12.5mA
1500
1000
500
00 _{10 20 30 40 50 60 70 80 90}
DISTANCE (mm)
FIGURE 12. ADC OUTPUT vs DISTANCE WITH DIFFERENT LED
CURRENT AMPLITUDES IN PROXIMITY SENSING
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FN6467.6
May 1, 2014