LTOE-15DB1

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 Parameter Input Forward current* Reverse voltage Supply voltage Output Low level output current Power dissipation* Operating temperature Storage temperature Soldering temperature** Symbol IF VR VCC IOL PO Topr Tstg Tsol Rating 30 5 7 4 150 -10 to +70 -40 to +80 260 Unit mA V V mA mW ° C ° C ° C * 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 Parameter Forward voltage Input Reverse current Driving current Operating supply voltage Output Low level output voltage High level output voltage Current consumption Transfer characteristics * Duty cycle Phase difference Symbol VF IR ID VCC VOL VOH ICC DA, B θAB1 to 4 tr Response tf Response frequency fMAX 0.1 20 1.0 50 VCC = 5V, IF = 10mA kHz MIN. 10 2.7 2.4 40 60 TYP. 1.8 16 5.0 0.1 4.9 1 50 90 0.1 MAX. 2.4 100 25 5.5 0.4 3 60 120 1.0 VCC = 5V IF = 10mA f =10kHZ Z = 0.1 to 1.7mm Test Condition IF = 20mA VR = 5 V Vcc = 5V VCC = 5V, IF = 10mA IOL=4mA VCC = 5V, IF = 10mA IOH=400uA VCC = 5V, IF = 10mA All CH. at logic low Unit V µA mA V V V mA % ° µs * 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 θAB1 θAB2 θAB3 θAB4 DA= tAH / tAP * 100% B output tBH tBP DB= tBH / tBP * 100% Refer to note2 in Fig.3 for the moving direction of scale. 90% A, B output 10% tr tf 90% 10% Part No.: LTOE-15DB1 DATA SHEET BNC-OD-C131/A4 Page: 4 of 8 Property of Lite-On Only Fig. 1 LED forward current vs. ambient temperature 50 Forward Current IF (mA) 40 30 20 10 0 0 20 40 60 o 80 100 Ambient Temperature TA ( C) Fig. 2 LED Output power dissipation vs. ambient temperature 200 Output Power Dissipation PO (mW) 160 120 80 40 0 0 20 40 60 o 80 100 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 VCC VOA VO B 6 5 4 3 OUT CH-A OUT CH-B C2 100n/50V +3.3V C1 100n/50V 2 Cathode Encoder GND 4.2 Apply 5.0 Volts R1 200Ω 1 Anode VCC VOA VO B 6 5 4 3 OUT CH-A OUT CH-B C2 100n/50V +5.0V C1 100n/50V 2 Cathode Encoder GND 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