ISL29044A_14 Datasheet, PDF (6/19 Pages) Intersil Corporation – Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output

ISL29044A
Typical Performance Curves V_DD = 3.0V
1.0
0.9
FLUORESCENT
0.8
0.7
0.6
0.5
HALOGEN _INCAND.
0.4
SUN
0.3
0.2
0.1
0
350
550
750
950
WAVELENGTH (nm)
FIGURE 4. SPECTRUM OF FOUR LIGHT SOURCES NORMALIZED BY
LUMINOUS INTENSITY (LUX)
100
90
80
70
ALS
60
50
40
30
20
10
0
PROX
vl1924e
WAVELENGTH (nm)
FIGURE 5. ISL29044A SENSITIVITY TO DIFFERENT WAVELENGTHS
1.0
0.8
0.6
0.4
0.2
ANGLE (0°)
FIGURE 6. ANGULAR SENSITIVITY OF ALS
4500
4000
3500
3000
2500
2000
HALOGEN
WHITE LED
1500
1000
500
0
0 10 20 30 40 50 60 70 80 90 100 110 120 130
LUX METER (lux)
FIGURE 7. ALS TRANFER FUNCTION 2 LIGHT SOURCES (RANGE0)
100
90
80
70
220mA WHITE
60
50
110mA WHITE
40
30
20
10
110mA GREY
0
0
20 40
220mA GREY
60
80 100 120 140 160
DISTANCE (mm)
FIGURE 8. PROX COUNTS vs DISTANCE WITH 10cmx10cm
REFLECTORS
160
ALS+PROX (DURING PROX SLEEP)
140
ALS-ONLY
120
100
80
60
PROX (DURING PROX SLEEP)
40
2.25 2.40 2.55 2.70 2.85 3.00 3.15 3.30 3.45 3.60
INPUT V_DD (V)
FIGURE 9. V_DD vs I_DD FOR VARIOUS MODES OF OPERATION
6
FN8419.1
April 19, 2013