Photointerrupters(Transmissive) KODENSHI DG-290 DIMENSIONS (Unit : mm) The DG–290 carrying a unique hysteresis transistor (BAMBIT)developed by KODENSHI CORP.facililates digital output bymeans of two leads.This digital photointerrupter,because of its ultra– c o m p a c t size,requires little space. FEATURES •DIGITAL OUTPUT : directly connect to a microcomputer digital port. •HYSTERESIS : stable against chattering of the object •HIGH–SPEED RESPONSE:faster than phototransistor type •Setting easy APPLICATIONS •CD–ROM drive •Sensor of camera lens position •Encoder of printer or scanner MAXIMUM RATINGS Item Input Output Power dissipation Forward current Reverse voltage Pulse forward current *1 Collector current C-E voltage E-C voltage Operating temp.*2 Soldering temp.*3 (Ta=25℃) Symbol Rating Unit PD IF VR IFP Ic VCEO VECO Topr. Tsol. 75 50 5 1 0.5 10 0.3 -25~+80 260 mW mA V A mA V V ℃ ℃ *1. pulse width ：ｔｗ≦100 μ sec.period ：T=10msec. *2. No icebound or dew *3. For MAX.5 seconds at the position of 1mm from the package ELECTRO-OPTICAL CHARACTERISTICS Item Symbol Forward voltage Reverse current Peak wavelength Operating supply voltage rang Low level output voltage Input High level output voltage Peak wavelength Threshold input current *4 Hysteresis *5 Transmisson L →H propagation time H →L propagation time Rise time Fall time VF IR λp VCC VOL VOH λp IFLH IFHL/IFLH tPLH tPHL tr tr Input (Ta=25℃) Conditions Min. IF=20mA VR=5V IF =20mA Typ. Max. Unit. 1.2 1.4 10 V μA nm V V V nm mA 940 2.0 VCC =3V,IF =0mA,RE =100k Ω VCC =3V,IF =14mA,RE =100k Ω VCC=3V,RE =100kΩ VCC=3V,RE =100kΩ VCC =3V,IF =14mA,RE =100k Ω *4. IFLH represents forward current when output changes from low to high. *5. IFHL represents forward current when output changes from high to low. - 1- 2.5 0.25 2.65 880 6.0 0.85 10 25 2.5 15 5.5 0.4 12.0 μsec. μsec. μsec. μsec. Photointerrupters(Transmissive) DG-290 Power dissipation Vs. Ambient temperature Output voltage Vs. Ambient temperature Hysteresis width Vs. Load resistance Threshold input current Vs. Ambient temperature Forward current Vs. Forward voltage LED Vs. Supply voltage LED Vs. Load resistance Hysteresis width Vs. Ambient temperature - 2- Switching time Vs. Load resistance