everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 1 3mm t-1 bient light sensor als-pdic144-6c/l378 am features ? close responsively to the human eye spectrum ? light to current, analog output ? good output linearity across wide illumination range ? low sensitivity variation across various light sources ? operation temperature performance, -40 o c to 85 o c ? wide supply voltage range, 1.8v to 5.5v ? size : 3mm lamp (flat lens) ? rohs compliant and pb free package description the als-pdic144-6c/l378 is an ambient light sensor, which incorporates a photodiode and a current amplifier ic in dip package. everlight als series products are a good effective solution to the power saving of display backlighting of mobile appliances, such as the mobile phones, nb and pdas. due to the high rejection ratio of infrared radiation, the spectral response of the ambient light sensor is close to human eyes. applications ? detection of ambient light to control display backlighting mobile devices ? mobile phones, pdas computing device ? tft lcd monitor for notebook computer consumer device ? tft lcd tv, video camera, digital camera, toys ? automatic residential and commercial management ? automatic contrast enhancement for electronic signboard ? ambient light monitoring device for daylight and artificial light ? street light, ccd/cctv
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 2 3mm t-1 mbient light sensor als-pdic144-6c/l378 a package dimensions unit: mm notes: 1. all dimensions are in millimeters 2. unspecified tolerance is 0.1mm.
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 3 3 mm t-1 ambient light sensor als-pdic144-6c/l378 absolute maximum ratings (ta=25 ) parameter symbol rating unit supply voltage [n t 1 ] v cc -0.7~6.5 v operating temperature range t opr -40 ~ +85 c storage temperature range t stg -40 ~ +100 c recommended operating conditions (ta=25 ) parameter symbol min. max. unit o perating temperature t opr -40 +85 c supply voltage v cc 1.8 5.5 v
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 4 3 mm t-1 ambient light sensor als-pdic144-6c/l378 electrical and optical characteristics (ta=25 ) parameter symbol min typ max. unit test condition dark current i ceo - - 0.1 ua v cc =3v, e v = 0lux i ph1 2.2 4.4 ua v cc =3v, e v = 10lux [note1] i ph2 22 44 ua v cc =3v, e v = 100lux [note1] i ph3 220 440 ua v cc =3v, e v = 1000lux [note1] light current i ph4 220 440 ua v cc =3v, e v = 1000lux [note2] photocurrent ratio i ph4 / i ph3 1 - 1 --- v cc =3v, e v = 1000lux peak sensitivity wavelength p - 550 - nm sensitivity wavelength range 390 - 700 nm rise time t r - 0.36 - ms fall time t f - 1.13 - ms v cc = 3 v r l = 27k ? angle of half sensitivity 2 1/2 - 143 - deg. i f = 20 ma note: 1. white fluorescent light (color temperature = 6500k) is used as light source. however, white led is substituted in mass production. 2. illuminance by cie standard illuminant-a / 2856k, incandescent lamp.
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 5 3mm t-1 mbient light sensor als-pdic144-6c/l378 a typical electrical and opti cal characteristics curves 1 10 100 1000 10000 1e-4 1e-3 0.01 0.1 1 10 t a = 25 vcc = 3v fluorence light r l = 75 k ? fluorence light r l = 27 k ? fluorence light r l = 7.5 k ? fluorence light r l = 1 k ? output voltage (v) illuminance (lux) fig.1 light current vs. illuminance fig.2 output voltage vs. illuminance fig.3 spectral response fig.4 light current vs. supply voltage fig.5 light current vs. temperature fig.6 dark current vs. temperature -60 -40 -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 v ce = 3v e v = 100 lux relative light current temperature ( )
3 mm t-1 mbient light sensor als-pdic144-6c/l378 a converting photocurrent to voltage note: 1. the output voltage (vout) is the product of photocurrent (iph) and loading resistor (rl) 2. a right loading resistor shall be chosen to meet the requirement of maximum ambient light and output saturation voltage v out (max.) = i out (max.) r l Q v out (saturation) v cc 0.8v 3. to avoid 60hz ripple from fluorescent lights, suggest that time constant must be greater than 0.5second r l x c l > 0.5 (empirical data) everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 6
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 7 3mm t-1 mbient light sensor als-pdic144-6c/l378 a packing quantity specification 1. 500pcs/1bag 5bags/1box 2. 10boxes/1carton label format cpn: customer?s production number p/n : production number qty: packing quantity cat: ranks hue: peak wavelength ref: reference lot no: lot number made in taiwan: production place
everlight electronics co., ltd. http://www.everlight.com document no: dls- 0000031 rev 1 december. 16 ,2010 8 3 mm t-1 mbient light sensor als-pdic144-6c/l378 a notes 1. above specification may be changed without notice. everlight will reserve authority on material change for above specification. 2. when using this product, please observe the absolute maximum ratings and the instructions for using outlined in these specification sheets. everlight assumes no responsibility for any damage resulting from use of the product which does not comply with the absolute maximum ratings and instru ctions included in these specification sheets. 3. these specification sheets include materi als protected under copyright of everlight corporation. please don?t reproduce or c ause anyone to reproduce them without everlight?s consent.
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