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| t TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER t TAOS018 - AUGUST 1999 D D D D D ac or dc Signal Coupling Wide Bandwidth . . . >200 kHz High Transfer-Gain Stability . . . 0.005%/C 3500 V Peak Isolation Typical Applications - Power-Supply Feedback - Medical-Sensor Isolation - Opto Direct-Access Arrangement (DAA) - Isolated Process-Control Transducers DCS OR P PACKAGE (TOP VIEW) LEDK LEDA PDK1 PDA1 1 2 3 4 8 7 6 5 NC NC PDK2 PDA2 NC - No internal connection Description The TIL300 precision linear optocoupler consists of an infrared LED irradiating an isolated feedback photodiode and an output photodiode in a bifurcated arrangement. The feedback photodiode captures a percentage of the flux of the LED that can be used to generate a control signal to regulate the LED drive current. This technique is used to compensate for the nonlinear time and temperature characteristics of the LED. The output-side photodiode then produces an output signal that is linearly proportional to the servo-optical flux emitted from the LED. A typical application circuit (shown in Figure 1) uses an operational amplifier as the input to drive the LED. The feedback photodiode sources current through R1, which is connected to the inverting input of the input operational amplifier. The photocurrent IP1 assumes a magnitude that satisfies the relationship IP1 = VI/R1. The magnitude of the current is directly proportional to the LED current through the feedback transfer gain K1(VI/R1 = K1 x IF). The operational amplifier supplies LED current to produce sufficient photocurrent to keep the node voltage Vb equal to node voltage Va. TIL300 1 1VCC+ Va Vb + VI - R1 IP1 + _ 1VCC- R3 IF 1VCC+ 3 P 2 K1 6 2VCC+ 2VCC+ - 4 5 IP2 R2 + 2VCC- VO = K3(R2/R1) VI K2 P NOTES: A. K1 is servo current gain, the ratio of the feedback servo photodiode current (IP1) to the input LED current (IF), i.e. K1 = IP1/IF. B. K2 is forward gain, the ratio of the output photodiode current (IP2) to the input LED current (IF), i.e. K2 = IP2/IF. C. K3 is transfer gain, the ratio of the forward gain to the servo gain, i.e. K3 = K2/K1. Figure 1. Typical Application Circuit The output photodiode is connected to a noninverting voltage follower; R2 is used to develop a voltage from the photodiode current. The output of the amplifier is VO = K2IFR2. Overall transfer gain VO/VI becomes VO/VI = (K2IFR2/K1IFR1). Factoring out the LED forward current IF and remembering that K2/K1 = K3, the overall transfer gain becomes VO/VI = K3R2/R1. The overall transfer gain, therefore, is shown to be independent of the LED current. Copyright (c) 2000, TAOS Inc. www.taosinc.com Texas Advanced Optoelectronic Solutions Inc. 800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972) 673-0759 t t 1 TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 Terminal Functions TERMINAL NAME LEDK LEDA PDK1 PDA1 PDA2 PDK2 NC NC NO. 1 2 3 4 5 6 7 8 DESCRIPTION LED cathode LED anode Photodiode 1 cathode Photodiode 1 anode Photodiode 2 anode Photodiode 2 cathode No internal connection No internal connection Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) Emitter Continuous total power dissipation (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 mW Input LED forward current, IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 mA Surge current with pulse duration < 10 s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA Reverse voltage, VR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V Reverse current, IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 A Detector Continuous total power dissipation (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mW Reverse voltage, VR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V Coupler Continuous total power dissipation (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 mW Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to 150C Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to 100C Input-to-output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3535 Vpeak Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Derate linearly from 25C at a rate of 2.66 mW/C. 2. Derate linearly from 25C at a rate of 0.66 mW/C. 3. Derate linearly from 25C at a rate of 3.33 mW/C. t www.taosinc.com 2 t TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 Electrical Characteristics at TA = 25C (unless otherwise noted) Emitter PARAMETER VF IR tr tf Cj LED forward voltage Temperature coefficient of VF Reverse current Rise time Fall time Junction capacitance IF = 10 mA VR = 5 V IF = 10 mA, IF = 10 mA, VF = 0, IF = 2 mA IF = 2 mA f = 1 MHz 1 1 15 TEST CONDITIONS MIN TYP 1.25 -2.2 10 MAX 1.50 UNIT V mV/C A s s pF Detector PARAMETER IDK IOS Cj Dark current Open-circuit voltage Short-circuit current limit Junction capacitance VR = -15 V, IF = 10 mA IF = 10 mA VF = 0, f = 1 MHz TEST CONDITIONS IF = 0 0.5 80 12 MIN TYP MAX 25 UNIT nA V A pF Coupler, detector bias voltage, VR = -15 V PARAMETER K1 K2 Servo-current Servo current gain Forward current gain TIL300 K3 Transfer gain TIL300A K1/K2 Gain temperature coefficient K3 BW tr tf Viso# TEST CONDITIONS IF = 1 mA IF = 10 mA IF = 1 mA IF = 10 mA IF = 1 mA IF = 10 mA IF = 1 mA IF = 10 mA IF = 10 mA IF = 1 to 10 mA IF = 1 to 10 mA, IF = 10 mA, IF(MODULATION) = 2 mA IF = 10 mA, IF(MODULATION) = 2 mA IF = 10 mA, IF(MODULATION) = 2 mA IIO = 10 A, time = 1 minute TA = 0 to 75C RL = 1 k, RL = 1 k, RL = 1 k, f = 60 Hz, MIN 0.3% 0.5% 0.3% 0.5% 0.75 0.75 0.9 0.9 TYP 0.7% 1.25% 0.7% 1.25% 1 1 1 1 -0.5 0.005 0.25% 0.5% 200 1.75 1.75 MAX 1.5% 2% 1.5% 2% 1.25 1.25 1.10 1.10 UNIT K3 %/C Transfer gain linearity Bandwidth Rise time Fall time Peak isolation voltage kHz s s V 3535 Servo-current gain (K1) is the ratio of the feedback photodiode current (IP1) to the input LED current (IF) current (IF), i.e. K1 = IP1/IF. Forward gain (K2 is the ratio of the output photodiode current (IP2) to the input LED current (IF), i.e. K2 = IP2/IF. Transfer gain (K3) is the ratio of the forward gain to the servo-current gain, i.e. K3 = K2/K1. Transfer gain linearity (K3) is the percent deviation of the transfer gain K3 as a function of LED input current (I ) or the package temperature. F # This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology. www.taosinc.com t t 3 TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 TYPICAL CHARACTERISTICS Table of Graphs FIGURE vs LED Forward Voltage IF Ip1 Ip1 K1 K3 AO LED Forward Current Servo Photodiode Current Normalized Servo Photodiode Current Normalized Servo Current Gain Normalized Transfer Gain Output Current Amplitude vs LED Forward Voltage vs LED Forward Current and Temperature vs LED Forward Current and Temperature vs LED Forward Current and Temperature vs LED Forward Current and Temperature vs LED Forward Current vs Frequency 2 3 4 5 6 7 8 9 10 t www.taosinc.com 4 t TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 TYPICAL CHARACTERISTICS LED FORWARD CURRENT vs LED FORWARD VOLTAGE 30 TA = 25C I F - LED Forward Current - mA I F - LED Forward Current - mA 25 100 TA = 25C LED FORWARD CURRENT vs LED FORWARD VOLTAGE 20 10 15 10 1 5 0 1 1.1 1.4 1.5 1.2 1.3 VF - LED Forward Voltage - V 1.6 0.1 1 1.1 1.5 1.2 1.3 1.4 VF - LED Forward Voltage - V 1.6 Figure 2 SERVO PHOTODIODE CURRENT vs LED FORWARD CURRENT AND TEMPERATURE 500 I p1 - Servo Photodiode Current - A I p1 - Servo Photodiode Current - A 450 400 350 300 250 200 150 100 50 0 0.1 1 10 IF - LED Forward Current - mA 100 TA = 0C TA = 25C TA = 50C TA = 75C Figure 3 SERVO PHOTODIODE CURRENT vs LED FORWARD CURRENT AND TEMPERATURE 1000 700 400 200 100 70 40 20 10 7 4 2 1 0.1 0.2 0.4 0.7 1 2 4 7 10 20 40 70 1000 TA = 0C TA = 25C TA = 50C TA = 75C IF - LED Forward Current - mA Figure 4 Figure 5 www.taosinc.com t t 5 TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 TYPICAL CHARACTERISTICS NORMALIZED SERVO PHOTODIODE CURRENT vs LED FORWARD CURRENT AND TEMPERATURE 4 I p1 - Normalized Servo Photodiode Current 3.5 3 2.5 2 1.5 1 0.5 0 0 5 25 10 15 20 IF - LED Forward Current - mA 30 TA = 0C TA = 25C TA = 50C TA = 75C I p1 - Normalized Servo Photodiode Current Normalized at IF = 10 mA TA = 25C VR = -15 V NORMALIZED SERVO PHOTODIODE CURRENT vs LED FORWARD CURRENT AND TEMPERATURE 10 Normalized at IF = 10 mA TA = 25C VR = -15 V 1 TA = 0C TA = 25C TA = 50C TA = 75C 0.1 0.01 0.1 10 1 IF - LED Forward Current - mA 100 Figure 6 NORMALIZED SERVO CURRENT GAIN vs LED FORWARD CURRENT AND TEMPERATURE 1.4 1.2 1 Normalized at TA = 0C IF = 10 mA TA = 25C TA = 25C TA = 50C TA = 75C 1.3 K3 - Normalized Transfer Gain - (K2/K1) Normalized at IF = 10 mA TA = 25C VR = -15 V Figure 7 NORMALIZED TRANSFER GAIN vs LED FORWARD CURRENT K1 - Normalized Servo Current Gain 1.2 1.1 0.8 0.6 0.4 1 0.9 0.2 0 0.1 0.8 0.7 1 10 IF - LED Forward Current - mA 100 0 5 10 15 20 IF - LED Forward Current 25 30 Figure 8 Figure 9 t www.taosinc.com 6 t TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 TYPICAL CHARACTERISTICS OUTPUT CURRENT AMPLITUDE vs FREQUENCY 5 A O - Output Current Amplitude - dB IF = 10 mA MOD = 2 mA (peak) VR = 15 V RL = 1 k -5 RL = 10 k 0 -10 -15 -20 -25 10 20 40 70 100 200 400 700 1000 f - Frequency - kHz Figure 10 www.taosinc.com t t 7 TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 MECHANICAL DATA DCS (R-PDSO-G8) 0.023 (0,58) 0.013 (0,33) 0.045 (1,14) 0.035 (0,89) 8 PLASTIC DUAL SMALL-OUTLINE OPTO COUPLER 0.092 (2,34) TYP 0.055 (1,40) 0.045 (1,14) 5 0.405 (10,29) 0.385 (9,78) 0.260 (6,60) 0.240 (6,10) 0.008 (0,20) NOM 1 0.055 (1,40) 0.035 (0,89) 0.390 (9,91) 0.370 (9,40) 4 0.100 (2,54) Gage Plane 0-5 0.010 (0,25) 0.030 (0,76) MIN 0.150 (3,81) MAX Seating Plane 0.020 (0,51) MAX 0.004 (0,10) 4073327/B 01/98 NOTES: A. All linear dimensions are in inches(millimeters). B. This drawing is subject to change without notice. t www.taosinc.com 8 t TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 MECHANICAL DATA P (R-PDIP-T8) 0.400 (10,60) 0.355 (9,02) 8 5 PLASTIC DUAL-IN-LINE PACKAGE 0.260 (6,60) 0.240 (6,10) 1 4 0.070 (1,78) MAX 0.020 (0,51) MIN 0.310 (7,87) 0.290 (7,37) 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) M 0.010 (0,25) NOM 0-15 4040082/B 03/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 www.taosinc.com t t 9 TIL300, TIL300A PRECISION LINEAR OPTOCOUPLER TAOS018 - AUGUST 1999 PRODUCTION DATA -- information in this document is current at publication date. Products conform to specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard warranty. Production processing does not necessarily include testing of all parameters. NOTICE Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems. TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER'S RISK. t www.taosinc.com 10 t |
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