RPR-220 sensors 1/3 reflective photosensor (photoreflector) RPR-220 the RPR-220 is a reflective photosensor. the emitter is a gaas infrared light emitting diode and the detector is a high- sensitivity, silicon planar phototransistor. a custom lamp was developed to enable the achievement of a smaller package than with conventional reflectors. ! ! ! ! application compact disc players, copiers, game machines, office automation equipment ! ! ! ! features 1) a plastic lens is used for high sensitivity. 2) a built-in visible light filter minimizes the influence of stray light. 3) lightweight and compact. ! ! ! ! external dimensions (units : mm) 1. unspecified tolerance shall be ?.2. note : 2. dimension in parenthesis are show for reference. 2 ? 2.2 4.9 6.5 min 20 1.4 6.4 2.8 2.5 1 (2.8) (2.5) 4 3 1 2 4 3 1 2 anode cathode emitter collector 4 ? 0.5 0.1 0.35 4 ? 0.6 (0.6) (3.2) (1) (0.6) ! ! ! ! absolute maximum ratings (ta=25 c) parameter forward current reverse voltage power dissipation collector-emitter voltage emitter-collector voltage collector current collector power dissipation operating temperature input (led) output (photo- transistor) storage temperature symbol i f v r p d v ceo v eco i c p c topr tstg limits 50 5 80 30 4.5 30 80 ? 25 + 85 ? 30 + 85 unit ma v mw v v ma mw ?c ?c
RPR-220 sensors 2/3 ! ! ! ! electrical and optical characteristics (ta=25 c) input characteristics output characteristics transfer characteristics forward voltage reverse current dark current peak sensitivity wavelength collector current collector-emitter saturation voltage response time parameter symbol v f i r i ceo p i c tr tf v ce (sat) min. ? ? ? ? 0.08 ? ? typ. 1.34 ? ? 800 0.3 0.1 10 ? max. 1.6 10 0.5 ? 0.8 0.3 unit vi f = 50ma v r = 5v v ce = 10v ? v ce = 2v, i f = 10ma v cc = 10v, i f = 20ma, r l = 100 ? i f = 20ma, i c = 0.1ma a a nm a v conditions s ! ! ! ! electrical and optical characteristic curves ambient temperature : ta ( c) 100 80 60 40 20 p c p d 0 0 20 40 60 80 100 fig.1 power dissipation / collector power dissipation vs. ambient temperature power dissipation / collector power dissiption : p d / p c (mw) forward current : i f ( ma) forward voltage : v f (v) 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.1 1 10 100 1a ta=25 c fig.2 forward current vs. forward voltage forward voltage : v f (v) ambient temperature : ta ( c) fig.3 forward voltage vs. ambient temperature 0 20406080100 0 0.4 0.8 1.2 1.6 2.0 10ma 1ma 0 0.5 1.0 1.5 2.0 2.5 0 1020304050 forward current : i f ( ma) collector current : i c ( ma) v ce =2v d=6mm fig.4 collector current vs. forward current collector current : i c ( ma) collector ? emitter : v ce ( v) 0 5 10 15 20 25 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 fig.5 output characteristics 30ma 20ma 15ma 10ma 5ma i f =40ma standard paper (90% reflection) d=6mm dark current : i ceo ( a) ambient temperature : ta ( c) ? 80 ? 60 ? 40 ? 20 0 20 40 60 80 100 120 140 ? 100 0.001 0.01 0.1 1 fig.6 dark current vs. ambient temperature 20v 10v v ce =30v
RPR-220 sensors 3/3 1 10 100 02468101214 distance : d ( mm) relative collector wrrent : i c (%) fig.7 relative output vs. distance relative collector current : i c (%) ambient temperature : ta ( c) ? 40 ? 60 ? 200 20406080100 0 20 40 60 80 100 120 160 140 fig.8 relative output vs. ambient temperature fig.9 forward current vs. ambient temperature forward current : i f ( ma) 0 20 40 60 80 100 20 80 100 60 40 0 ambient temperature : ta ( c) ! ! ! ! circuit for testing transfer characteristics v cc i c i f d=6mm reflection plate v cc =2v i f =10ma
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