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SFH-7770 Arkusz danych(PDF) 9 Page - OSRAM GmbH |
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SFH-7770 Arkusz danych(HTML) 9 Page - OSRAM GmbH |
9 / 22 page SFH 7770 2011-09-16 9 Characteristics (Ta = 25°C ) Parameter Symbol Value Unit min. typ. max. Ambient Light Sensor (ALS) Wavelength of max. sensitivity S max 555 nm Spectral range of sensitivity (10% of S max) S10% 480-660 nm Measurement range 3 65000 counts Sensitivity (1000lx) Out 0.6 1 1.5 count/lx Deviation from linear output characteristics 1) X = 100-65000lx X = 10-100lx X = 3-10lx 1) The deviation of the linear output characteristic is referenced to 1000lx and follows the formula : X: sensor illumination level in lux Y X: sensor output / measurement value at illumination level X Y 1000lX: sensor output / measurement value at illumination level 1000lx f lin 5 10 30 % Temperature coefficient for E V measurement 0°C ... 50°C -15°C ... 70°C T cEv - 0.20 - 0.25 + 0.20 + 0.25 %/K %/K Update of register data after MCU request t 100 ms Measurement repetition rate in FREE-RUNNING mode, programmable t rep 100 ... 2000 ms Mean current consumption in FREE-RUNNING mode, t rep = 500ms I act 200 μA Current consumption in STAND-BY mode I stby 5μA Error by Flicker noise (caused by bulbs or fluorescent lamps) (f = 50 or 60Hz, 100% modulation) -5 +5 % f lin Y X Y 1000lx ------------------ 1000lx X ------------------ 1 – 100% = |
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