ISL29023 Datasheet, PDF (4/14 Pages) Intersil Corporation – Integrated Digital Ambient Light Sensor with Interrupt Function

ISL29023
Typical Performance Curves
SUN
HALOGEN
INCANDESCENT
FLUORESCENT
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
FIGURE 3. NORMALIZED SPECTRAL RESPONSE OF LIGHT SOURCES
RADIATION PATTERN
LUMINOSITY
20° ^{10° 0° 10°} 20°
30°
ANGLE _40°
50°
30°
40°
50°
60°
60°
70°
70°
80°
80°
90°
90°
0.2 0.4 0.6 0.8 1.0
RELATIVE SENSITIVITY
FIGURE 5. RADIATION PATTERN
10
8
6
4
2
1.2
HUMAN EYE
1.0
0.8
0.6
0.4
IR SENSING
0.2
0
AMBIENT LIGHT SENSING
-0.2
300 400 500 600 700 800 900
WAVELENGTH (nm)
1000 1100
FIGURE 4. NORMALIZED SPECTRAL RESPONSE FOR AMBIENT
LIGHT SENSING AND IR SENSING
1000
900
800
700
ALS SENSING
RANGE 1 (1k Lux)
INCANDESCENT
16-BIT ADC
NO COVER GLASS
65535
600
HALOGEN
500
32768
400
FLUORESCENT
300
200
100
0
0
1000 LUX
E_cal = ₂₁₆ x DATA
0
100 200 300 400 500 600 700 800 900 1000
LUX METER READING (LUX)
FIGURE 6. SENSITIVITY TO THREE LIGHT SOURCES
1.10
300 Lux FLUORESCENT LIGHT
ALS SENSING
1.05 ^{RANGE 1 (1k Lux)}
1.00
0.95
0
-60
-20
20
60
100
TEMPERATURE (°C)
FIGURE 7. OUTPUT CODE FOR 0 LUX vs TEMPERATURE
90
ALS SENSING
10,000 Lux
85
0.90
-60
-20
20
60
100
TEMPERATURE (°C)
FIGURE 8. OUTPUT CODE vs TEMPERATURE
80
75
70
65
60
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 9. SUPPLY CURRENT vs TEMPERATURE IN ALS SENSING
4
FN6691.1
July 17, 2012