Single Emitter Bar Code Optic Head OTBC-04XX Series (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 OTBC-04XX series combine a single emitter with a phototransistor in a compact low cost package containing a lens and aperture. The OTBC-0480 has a 940 nm infrared emitter and a phototransistor. The OTBC-0490 has a 660 nm visible red emitter and a phototransistor. The OTBC-0482 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------------------------------------------------------------------------------------------------------------------ - 55°C to +100°C Operating Temperature Range ----------------------------------------------------------------------------------------------------------------- - 40°C to +85°C Lead Soldering Temperature (1/16” from case for 5 seconds soldering iron, 10 seconds flow soldering)--------------------------------------------------------------------------------------------- 260°C Infrared Emitter (940 nm) Reverse Voltage ---------------------------------------------------------------------------------------------------------------------------------------------------- 5 V Continuous Forward Current ------------------------------------------------------------------------------------------------------------------------------ 120 mA Peak Forward Current ------------------------------------------------------------------------------------------------------------------------------------------ 1.5 A Power Dissipation ------------------------------------------------------------------------------------------------------------------------------------------- 100 mW 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 25°C) ----------------------------------------------------------------------------------------------- 100 mW RHOPOINT COMPONENTS LTD Page 1 of 3 Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX Tel: +44 (0)1883 717988 Fax: +44 (0)1883 712938 Email: [email protected] Web: www.rhopointcomponents.com Single Emitter Bar Code Optic Head OTBC-04XX Series (OTR480/490/482) Product Specifications (TA = 25°C unless noted) Infrared Emitter (OTBC-048X) 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 λP I ∆λ θ Min Symbol VF IR λP IV ∆λ θ Min Symbol ICE(ON) ICE0 VCE(SAT) Tr Tf Min 1 1.3 Typ 1.3 Max 1.45 100 Units V µA nm mW/sr nm Degrees Max 2.4 100 Units V µA nm mcd nm Degrees Max Units mA nA V µs µs 940 2.5 50 10 Visible Emitter (OTBC-049X) 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 (OTBC-04X0) 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=1kΩ, IC=1mA) Fall Time (VCC=5V, RL=1kΩ, 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 µA nA kHz Reflective Surface Parameter Element Contrast Diffused Reflectance Element Width Narrow Element to Narrow Space Ratio Depth of Field RHOPOINT COMPONENTS LTD Page 2 of 3 Symbol WN Min (80%) (90%) 0.010 d 0.090 Typ Max Units % % in 0.95 0.125 0.160 in Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX Tel: +44 (0)1883 717988 Fax: +44 (0)1883 712938 Email: [email protected] Web: www.rhopointcomponents.com Single Emitter Bar Code Optic Head OTBC-04XX Series (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 OTBC-04XX series optic heads. The first amplifier servers as a current-to-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 µF 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 MΩ resistor on the last stage (indicated with an *) sets the positive feedback, and combined with the 10 kΩ input resistor the hysterisis is set to approximately 25 mV. Setting the 2.2 MΩ resistor to 100 kΩ 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 OTBC-04X X-XX 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. RHOPOINT COMPONENTS LTD Page 3 of 3 Aperture Size: (0) 0.006” x 0.090” (C) Custom Number of Channels: (1) 1 channel (2) 2 channels (NN) NN channels Note: Test capability to better than 0.003” channel-to-channel alignment available. Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX Tel: +44 (0)1883 717988 Fax: +44 (0)1883 712938 Email: [email protected] Web: www.rhopointcomponents.com