ISL29021 Intersil Corporation, ISL29021 Datasheet - Page 10

• Manufacturer Part Number: ISL29021
• Description: Digital Proximity Sensor
• Manufacturer: Intersil Corporation

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Typical Performance Curves
LUMINOSITY
90¬
80¬
FIGURE 9. ADC OUTPUT vs DISTANCE WITH DIFFERENT
70¬
ANGLE
60¬
1.2
1.0
0.8
0.6
0.4
0.2
FIGURE 5. SPECTRUM OF FOUR LIGHT SOURCES
4500
4000
3500
3000
2500
2000
1500
1000
0
500
300
50¬
0
0
40¬
LED CURRENT AMPLITUDES IN PROXIMITY
SENSING
400
FIGURE 7. RADIATION PATTERN
10
30¬
RADIATION PATTERN
500
20¬
20
WAVELENGTH (nm)
10¬
600
30
10
DISTANCE (mm)
SUN
0¬
40
700
I
I
I
I
IRLED
IRLED
IRLED
IRLED
RELATIVE SENSITIVITY
10¬
0.2
50
800
= 100mA
= 50mA
= 25mA
= 12.5mA
INCANDESCENT
20¬
HALOGEN
0.4
FLUORESCENT
60
V
900
30¬
SUP
0.6
70
40¬
(V
1000 1100
0.8
DDD
50¬
80
60¬
, V
1.0
70¬
80¬
90¬
DDA
90
ISL29021
) = 3V, R
EXT
FIGURE 10. PROXIMITY DETECTIONS OF VARIOUS
= 499kΩ
FIGURE 8. ADC OUTPUT vs DISTANCE WITH DIFFERENT
FIGURE 6. SPECTRAL RESPONSE FOR PROXIMITY
-0.2
1.2
1.0
0.8
0.6
0.4
0.2
350
300
250
200
150
100
10000
0
50
300
1000
0
100
0
10
1
0
400
SENSING
OBJECTS IN PROXIMITY SENSING
BIOLOGICAL OBJECTS
PIG'S SKIN
92% BRIGHTNESS PAPER
10
130 CTS = 500 CTS x 65% x 65%
18% GRAY
500
20
ESD BLACK FOAM
18% GRAY CARD
WAVELENGTH (nm)
600
20
= 211 CTS
BLOND HAIR
DISTANCE (mm)
DISTANCE (mm)
40
FOR ISL29021 AND SFH4650,
700
4mm CENTER-TO-CENTER
30
IR TRANSMITTING GLASS
ISOLATED BY BARRIER
800
60
AND BEHIND A 65%
BRUNETTE HAIR
40
900
ILED = 12.5mA
fLED = 328kHz
IR AND
PROXIMITY
SENSING
12-BIT ADC
80
1000 1100
RANGE 3
50
March 3, 2009
FN6732.0
100
60