el7900 Intersil Corporation, el7900 Datasheet

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... Data Sheet Ambient Light Photo Detect IC The EL7900 is a light-to-current optical sensor combining a photodiode and a current amplifier on a single monolithic IC. Output current is directly proportionate to the light intensity on the photodiode. Its sensitivity is superior to that of a phototransistor and exhibits little variation. Its spectral sensitivity matches closely to the luminous efficiency and linearity ...

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... Switching time measurement is based on Figures 1 and 2. 2. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested PULSE EL7900 DRIVE FIGURE 1. RISE/FALL TIME MEASUREMENT 2 EL7900 = +25°C) Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-45°C to +100° +25° ...

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... Typical Performance Curves EL7900 RELATIVE RESPONSE 100 EL7900 RELATIVE 20 RESPONSE WITH IR GLASS FILTER 0 400 500 600 700 WAVE LENGTH (nm) FIGURE 3. SPECTRAL RESPONSE 1000 0 -1000 -2000 V DD -3000 -4000 -45 -35 -25 - TEMPERATURE (°C) FIGURE 5. DARK CURRENT vs TEMPERATURE ...

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... For 100 lux of input fluorescent light, the EL7900 has an output current of 60µA. The EL7900 is housed in an ultra-compact surface mount clear plastic package. Light-to-Current and Voltage Conversion The EL7900 has a responsiveness that is directly proportional to the intensity of light intercepted by the photodiodes ...

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... The mechanical mounting of the is the RANGE sensor, light aperture hole size and use of a light pipe or bezel are critical in determining the response of the EL7900 for a given exposure of light. The example in Figure 10 shows a fully automatic dimming solution with no user interaction. Choose R for any desired minimum brightness and slope ...

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... For information regarding Intersil Corporation and its products, see www.intersil.com 6 EL7900 Short Circuit Current Limit The EL7900 does not limit the output short circuit current. If the output is directly shorted to the ground continuously, the output current could easily increase for a strong input light such that the device may be damaged. Maximum reliability is maintained if the output continuous current never exceeds 6mA by adding a load resistor at the output ...

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... Package Outline Drawing L5.2x2.1 5 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 01/07 2.10 6 PIN 1 INDEX AREA 0.10 (4X) TOP VIEW (0.65) (0.65) (1.95) TYPICAL RECOMMENDED LAND PATTERN 7 EL7900 0.30±0. (1.35 NOTES: 1. Dimensions are in millimeters. Dimensions Dimensioning and tolerancing conform to AMSE Y14.5m-1994. ...