Single Emitter Bar Code Optic Head OTR480/490/482 FEATURES: * Single Emitter Bar Code / Fine Line Sensor * Better than 0.010" Resolution * Compact Size * Easily Ganged for Multiple Channels PRODUCT DESCRIPTION The OTR480/490/482 series combine a single emitter with a phototransistor in a compact low cost package containing a lens and aperture. The OTR480 has a 940 nm infrared emitter and a phototransistor. The OTR490 has a 660 nm visible red emitter and a phototransistor. The OTR482 has a 940 nm infrared emitter and a phototransistor with an ambient light filter, for use in high ambient light conditions. These devices are easily ganged for multi-channel applications. Consult factory for custom apertures, emitters, or sensors. Absolute Maximum Ratings General Storage Temperature Range -------------------------------------------------------------------------------------------------------------------- - 55C to +100C Operating Temperature Range ------------------------------------------------------------------------------------------------------------------- - 40C to +85C Lead Soldering Temperature (1/16" from case for 5 seconds soldering iron, 10 seconds flow soldering)----------------------------------------------------------------------------------------------- 260C Infrared Emitter (940 nm) Reverse Voltage ----------------------------------------------------------------------------------------------------------------------------------------------------- 5 V Continuous Forward Current ------------------------------------------------------------------------------------------------------------------------------- 120 mA Peak Forward Current -------------------------------------------------------------------------------------------------------------------------------------------- 1.5 A Power Dissipation -------------------------------------------------------------------------------------------------------------------------------------------- 100 mW OPTO TECHNOLOGY, INC. 562 Chaddick Drive, Wheeling, IL 60090 Phone: (847) 537-4277 FAX: (847) 537-4785 REV. O (10/97) Single Emitter Bar Code Optic Head OTR480/490/482 Visible Emitter (660 nm) Reverse Voltage ----------------------------------------------------------------------------------------------------------------------------------------------------- 4 V Continuous Forward Current --------------------------------------------------------------------------------------------------------------------------------- 40 mA Peak Forward Current ---------------------------------------------------------------------------------------------------------------------------------------- 300 mA Power Dissipation -------------------------------------------------------------------------------------------------------------------------------------------- 100 mW Phototransistor Collector-Emitter Voltage ---------------------------------------------------------------------------------------------------------------------------------------- 30 V Emitter-Collector Voltage ------------------------------------------------------------------------------------------------------------------------------------------ 5 V Power Dissipation (Derate 2.4 mW/C above 25C) ------------------------------------------------------------------------------------------------- 100 mW Product Specifications (TA = 25C unless noted) Infrared Emitter Parameter Forward Voltage (IF = 50 mA) Reverse Current (VR = 5 V) Peak Wavelength (IF = 20 mA) Radiant Intensity (IF = 20 mA) Spectral Bandwidth at 50% (IF = 20 mA) Half Intensity Beam Angle Symbol VF IR P I Min Symbol VF IR P IV Min Symbol ICE(ON) ICE0 VCE(SAT) Tr Tf Min 1 1.3 Typ 1.3 Max 1.45 100 Units V A nm mW/sr nm Degrees Max 2.4 100 Units V A nm mcd nm Degrees Max Units mA nA V s s 940 2.5 50 10 Visible Emitter Parameter Forward Voltage (IF = 20 mA) Reverse Current (VR = 4 V) Peak Wavelength (IF = 20 mA) Luminous Intensity (IF = 20 mA) Spectral Bandwidth at 50% (IF = 20 mA) Half Intensity Beam Angle 250 Typ 1.8 660 500 20 10 Phototransistor Parameter 2 Light Current (Ee=0.1mW/cm , VCE=5V) Dark Current (Ee=0, VCE=10V) 2 Saturation Voltage (IC=0.5mA, Ee=0.1mW/cm ) Rise Time (VCC=5V, RL=1k, IC=1mA) Fall Time (VCC=5V, RL=1k, IC=1mA) Typ 2.8 100 0.4 15 15 Coupled Characteristics Parameter Symbol Min Typ 1 Light Current (IF = 20 mA, VCE = 5V, d = 0.125 in) ICE(ON) 5 10 Dark Current (IF = 0 mA, VCE = 5V) ICE0 6 dB Bandwidth 3 1 Reflecting surface is Eastman Kodak neutral white test card having a 90% diffused reflectance. Max 200 Units A nA kHz Reflective Surface Parameter Element Contrast Diffused Reflectance Element Width Narrow Element to Narrow Space Ratio Depth of Field OPTO TECHNOLOGY, INC. Symbol WN Min (80%) (90%) 0.010 d 0.090 Typ Max Units % % in 0.95 0.125 0.160 in 562 Chaddick Drive, Wheeling, IL 60090 Phone: (847) 537-4277 FAX: (847) 537-4785 REV. O (10/97) Single Emitter Bar Code Optic Head OTR480/490/482 Suggested Application Circuit The above circuit represents an adaptive dual peak detector with a first stage transimpedance amplifier. This circuit is recommended for typical bar code or fine element sensing applications using the OTR480/490 series optic heads. The first amplifier servers as a currentto-voltage amplifier (transimpedance). The second part of the circuit provides positive and negative peak detection. The peak voltages are temporarily stored in the 0.1 F capacitors. The comparator reference is approximately 45% of the peak-to-peak amplitude. This, in effect, provides an adaptive threshold to the comparator based on the voltage peaks of the incoming signal. The 2.2 M resistor on the last stage (indicated with an *) sets the positive feedback, and combined with the 10 k input resistor the hysterisis is set to approximately 25 mV. Setting the 2.2 M resistor to 100 k will increase the hysterisis to 500 mV, but response will be sacrificed. Vout is low for reflectance and high (+5V) for no reflectance (i.e., sensing a dark mark). Ordering Information OTR4 X X - N N - 0 Aperture Size: (0) 0.006" x 0.090" (C) Custom Emitter: (8) 940 nm Infrared (9) 660 nm Visible Red Sensor: (0) Phototransistor (2) Phototransistor w/ ambient filter Note: Option 2 available with infrared emitter only. OPTO TECHNOLOGY, INC. Number of Channels: (01) 1 channel (02) 2 channels (NN) NN channels Note: Test capability to better than 0.003" channel-to-channel alignment available. 562 Chaddick Drive, Wheeling, IL 60090 Phone: (847) 537-4277 FAX: (847) 537-4785 REV. O (10/97)