Property of Lite-On Only 1. Description This is a transmissive optical encoder sensor for closed-loop position detection system. It consists of a collimated Red LED and a multiple sets of photo detectors OEIC enclosed in a C-shape plastic housing. The photo detectors IC is designed by CMOS process which with the features of low consumption current and wide operating voltage. The collimated light source consists of a 650nm AlInGaP LED and a collimated lens. By the design of this highly collimated light source to cooperate with the photo detectors IC, this optical encoder is extremely tolerant to mounting misalignment. 1.1 Features 150 LPI (169µm) resolutions For linear and rotary applications Insensitive to radial and axial play TTL 3.3V or 5V CMOS compatible Two channels quadrature digital output, no signal adjustment required RoHS Compliance 1.2 Applications Facsimile Printer Plotter Scanner Copier Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 1 of 8 Property of Lite-On Only 2. Outline Dimensions 1. Unspecified tolerances shall be ±0.3 2. Dimensions in parenthesis are shown for reference. 3. Date code was expressed 4 digits at second row: First 2 digits: Last 2 digits of production year. Last 2 digits: Production week. Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 2 of 8 Property of Lite-On Only 3. Rating and Characteristics 3.1 Block diagram 6 VCC + - Comparator 5 VOA Anode 1 PD Array Cathode 2 + - 4 VOB + - Comparator + - 3 GND 3.2 Absolute maximum ratings At Ta = 25°C Symbol Rating Unit Forward current* IF 30 mA Reverse voltage VR 5 V Supply voltage VCC 7 V Low level output current IOL 4 mA Power dissipation* PO 150 mW Operating temperature Topr -10 to +70 °C Storage temperature Tstg -40 to +80 °C Soldering temperature** Tsol 260 °C Output Input Parameter * The derating factors of absolute maximum ratings due to ambient temperature are shown in Fig 1,2. ** For 5 seconds. Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 3 of 8 Property of Lite-On Only 3.3 Electro-optical characteristics at Ta = 25°C Transfer characteristics * Output Input Parameter Symbol MIN. TYP. MAX. Forward voltage VF - 1.8 2.4 IF = 20mA V Reverse current IR - - 100 VR = 5V µA Driving current ID 10 16 25 Vcc = 5V mA Operating supply voltage VCC 2.7 5.0 5.5 - Low level output voltage VOL - 0.1 0.4 High level output voltage VOH 2.4 4.9 - Current consumption ICC - 1 3 DA, B 40 50 60 θAB1 to 4 60 90 120 tr - 0.1 1.0 tf - 0.1 1.0 fMAX - 20 50 Duty cycle Phase difference Test Condition V VCC = 5V, IF = 10mA IOL=4mA VCC = 5V, IF = 10mA IOH=400uA VCC = 5V, IF = 10mA All CH. at logic low V V mA % VCC = 5V IF = 10mA f =10kHZ Z = 0.1 to 1.7mm Response Response frequency Unit ° µs VCC = 5V, IF = 10mA kHz * The test condition is according to Fig.3. Transfer characteristics value does not include any error of linear scale. Z stands for distance between scale surface (patterned surface) and detector holder surface. 3.4 Output waveform tAP tAH A output DA= tAH / tAP * 100% θAB1 θAB2 θAB3 θAB4 B output tBH DB= tBH / tBP * 100% tBP Refer to note2 in Fig.3 for the moving direction of scale. 90% A, B output 10% 10% tr Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 90% tf Page: 4 of 8 Property of Lite-On Only Fig. 1 LED forward current vs. ambient temperature Forward Current IF (mA) 50 40 30 20 10 0 0 20 40 60 80 100 o Ambient Temperature TA ( C) Fig. 2 LED Output power dissipation vs. ambient temperature Output Power Dissipation PO (mW) 200 160 120 80 40 0 0 20 40 60 80 100 o Ambient Temperature TA ( C) Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 5 of 8 Property of Lite-On Only Fig. 3 Test Conditions Note: 1. Distance between scale surface (patterned surface) and detector holder surface 2. The moving direction of scale against output waveform (Refer to 3.4) Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 6 of 8 Property of Lite-On Only 4. Recommend application circuit 4.1 Apply 3.3 Volts R1 91Ω 1 Anode C1 100n/50V VCC 6 VOA 5 OUT CH-A 4 OUT CH-B VOB 2 Cathode GND C2 100n/50V +3.3V C2 100n/50V +5.0V 3 Encoder 4.2 Apply 5.0 Volts R1 200Ω 1 Anode C1 100n/50V VCC 6 VOA 5 OUT CH-A 4 OUT CH-B VOB 2 Cathode GND 3 Encoder Note: Recommended no pull-up on Channel A & Channel B. Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 7 of 8 Property of Lite-On Only 5. Packing 5.1 Packing Format Inner boxes including 18pcs tubes Packing tubes including 58pcs products Indication label Outer carton including 6pcs boxes Indication label 5.2 Packing dimension Outer Carton: 66.5 x 35.5 x 26.5 cm Inner Box: 66 x 17 x 7.5 cm Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 8 of 8