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ISL29021IROZ-T7 Datasheet(PDF) 10 Page - Intersil Corporation |
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ISL29021IROZ-T7 Datasheet(HTML) 10 Page - Intersil Corporation |
10 / 12 page 10 FN6732.0 March 3, 2009 Typical Performance Curves VSUP (VDDD, VDDA) = 3V, REXT = 499kΩ FIGURE 5. SPECTRUM OF FOUR LIGHT SOURCES FIGURE 6. SPECTRAL RESPONSE FOR PROXIMITY SENSING FIGURE 7. RADIATION PATTERN FIGURE 8. ADC OUTPUT vs DISTANCE WITH DIFFERENT OBJECTS IN PROXIMITY SENSING FIGURE 9. ADC OUTPUT vs DISTANCE WITH DIFFERENT LED CURRENT AMPLITUDES IN PROXIMITY SENSING FIGURE 10. PROXIMITY DETECTIONS OF VARIOUS BIOLOGICAL OBJECTS 0 0.2 0.4 0.6 0.8 1.0 1.2 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) SUN INCANDESCENT HALOGEN FLUORESCENT -0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) IR AND PROXIMITY SENSING RADIATION PATTERN LUMINOSITY ANGLE RELATIVE SENSITIVITY 90¬ 80¬ 70¬ 60¬ 50¬ 40¬ 30¬ 20¬ 10¬ 0¬ 10¬ 20¬ 30¬ 40¬ 50¬ 60¬ 70¬ 80¬ 90¬ 0.2 0.4 0.6 0.8 1.0 1 10 100 1000 10000 0 20406080 100 DISTANCE (mm) 92% BRIGHTNESS PAPER 18% GRAY CARD ESD BLACK FOAM 0 500 1000 1500 2000 2500 3000 3500 4000 4500 0 1020 30405060708090 DISTANCE (mm) IIRLED = 100mA IIRLED = 50mA IIRLED = 25mA IIRLED = 12.5mA 0 50 100 150 200 250 300 350 0 10 20 30 405060 DISTANCE (mm) 12-BIT ADC RANGE 3 fLED = 328kHz ILED = 12.5mA 4mm CENTER-TO-CENTER FOR ISL29021 AND SFH4650, ISOLATED BY BARRIER AND BEHIND A 65% 18% GRAY BLOND HAIR BRUNETTE HAIR PIG'S SKIN IR TRANSMITTING GLASS 130 CTS = 500 CTS x 65% x 65% = 211 CTS ISL29021 |
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