TOSHIBA FIBER OPTIC TRANSCEIVING MODULE TODX297 handbook
Contents
1. Fiber Optic Connector Insertion Side Input Fiber Optic Transceiving Module Transmitting Receiving Bottom View Fiber Optic Connector Type Name TOCP200 TOCP200P TOCP255 TOCP255P Output Transmission Distance m 0 2 to 40 6 Applicable Optical Fiber with Fiber Optic Connectors TOCP200 TOCP255 B TOCP200P B TOCP255P B B TODX297 2001 07 26 TOSHIBA TODX297 7 Precautions during use 1 2 3 4 5 6 7 Maximum rating The maximum ratings are the limit values which must not be exceeded during operation of device None of these rating value must not be exceeded If the maximum rating value is exceeded the characteristics of devices may never be restored properly In extreme cases the device may be permanently damages Lifetime of light emitters If an optical module is used for a long period of time degeneration in the characteristics will mostly be due to a lowering of the fiber output power Pf This is caused by the degradation of the optical output of the LEDs used as the light source The cause of degradation of the optical output of the LEDs may be defects in wafer crystallization or mold resin stress The detailed causes are however not clear The lifetime of light emitters is greatly influenced by the operating conditions and the environment in w2. 26 TOSHIBA TODX297 RESTRICTIONS ON PRODUCT USE 000707EAC e TOSHIBA is continually working to improve the quality and reliability of its products Nevertheless semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress It is the responsibility of the buyer when utilizing TOSHIBA products to comply with the standards of safety in making a safe design for the entire system and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life bodily injury or damage to property In developing your designs please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications Also please keep in mind the precautions and conditions set forth in the Handling Guide for Semiconductor Devices or TOSHIBA Semiconductor Reliability Handbook etc The TOSHIBA products listed in this document are intended for usage in general electronics applications computer personal equipment office equipment measuring equipment industrial robotics domestic appliances etc These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and or reliability or a malfunction or failure of which may cause loss of human life or bodily injury Unintended Usage Unintended Usage include atomic en
3. Output If the receiver output is at low and is connected to the power supply or if the output is high and is connected to GND the internal IC may be destroyed Soldering condition Solder at 260 C or less for no more than three seconds Precautions when disposing of devices and packing materials When disposing devices and packing materials follow the procedures stipulated by local regulations in order to protect the environment against contamination Compound semiconductors such as GaAs are used as LED materials in this module When devices are disposed of worker safety and protection of the environment must be taken into account Precautions during use Toshiba is continually working to improve the quality and the reliability of their products Nevertheless semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and their vulnerability to physical stress It is the responsibility of the buyer when utilizing Toshiba products to observe standards of safety and to avoid situations in which the malfunction or failure of a Toshiba product could cause loss of human life bodily injury or damage to property When developing equipment please ensure that Toshiba products are used within the specified operating ranges set forth in the most recent product specifications Also please keep in mind the precautions and conditions set forth in the Toshiba Semiconductor Reliability Handbook 8 2001 07
4. Bi TOD X 297 Av Fs TODX297 FIBER OPTIC TRANSCEIVING MODULE TODX297 FIBER OPTIC TRANSCEIVING ee MODULE FOR DUPLEX DIGITAL SIGNAL COMMUNICATION 15 5 0 3 a Data rate DC to 6 Mb s NRZ code Transmission distance Up to 40 m TTL interface LED is driven by Differential cuicuit ATC Automatic Threshold Control circuit is used for stabilized output at wide range of optical power level No need to change a resistor according to transmission distance connection Output GND1 Vcecl GND2 GND3 Current limiting co o0 o 7 00 resistor of LED ae an ae Vee i Input 87 654321 Case 0 Case 1 Maximum Ratings Ta 25 C Storage Temperature 40 to 85 Operating Temperature 40 to 85 Note 1 Soldering time lt 3 s More than 1 mm apart from the package Handling precaution The LEDs used in this product contain GaAs Gallium Arsenide Care must be taken to protect the safety of people and the environment when scrapping or terminal processing 1 2001 07 26 TOSHIBA TODX297 2 Recommended Operating Conditions 3 Electrical and Optical Characteristics Ta 25 C Vcc 5 V Characteristics Symbol Test Condition Se Data Rate he N NRZ Code Note 2 pc Using TODX297 Pulse Width Distortion Pulse width 165 ns 55 55 ns Pulse cycle 330 ns C 10 pF Fiber Output Power APF 1m R 4 3kQ Note 5 15 9 dem Maximum Receivable Power Note 6 DC to 6 Mb s Usi
5. ects of flux In such a cases be sure to check the devices reliability Noise resistance It is believed that the use of optical transfer devices improve noise resistance In theory optical fiber is not affected by noise at all However receiving modules which handle signals whose level is extremely small are susceptible to noise TOSLINK improve noise resistance to use a conductive case However the current signal output by the optical receiving modules photodiode is extremely small Thus in some environments shielding the case may not achieve sufficient noise resistance First systems which incorporate TOSLINK Toshiba recommend testing using the actual device to check its noise resistance Use a simple noise filter on TOSLINK fiber optic transceiving module s power line If the ripple in the power supply used is significant reinforce the filter The optical module is to be used in an area which is susceptible to radiated noise increase the shielding by covering the optical module and the power line filter with a metallic cover Vibration and shock This module is plastic sealed and has its wire fixed by resin This structure is relatively resistant to vibration and shock In actual equipment there are sometime cases in which vibration shock or stress is applied to soldered parts or connected parts resulting in lines cut A care must be taken in the design of equipment which will be subject to high levels of vibration Fixing f
6. ergy control instruments airplane or spaceship instruments transportation instruments traffic signal instruments combustion control instruments medical instruments all types of safety devices etc Unintended Usage of TOSHIBA products listed in this document shall be made at the customer s own risk Gallium arsenide GaAs is a substance used in the products described in this document GaAs dust and fumes are toxic Do not break cut or pulverize the product or use chemicals to dissolve them When disposing of the products follow the appropriate regulations Do not dispose of the products with other industrial waste or with domestic garbage The information contained herein is presented only as a guide for the applications of our products No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others e The information contained herein is subject to change without notice 9 2001 07 26
7. hich it is used as well as by the lifetime characteristics unique to the device type Thus when a light emitting device and its operating conditions determined Toshiba recommend that lifetime characteristics be checked Depending on the environment conditions Toshiba recommend that maintenance such as regular checks of the amount of optical output in accordance with the condition of operating environment Soldering Optical modules are comprised of internal semiconductor devices However in principle optical modules are optical components During soldering ensure that flux does not contact with the emitting surface or the detecting surface Also ensure that proper flux removal is conducted after soldering Some optical modules come with a protective cap The protective cap is used to avoid malfunction when the optical module is not in use Note that it is not dust or waterproof As mentioned before optical modules are optical components Thus in principle soldering where there may be flux residue and flux removal after soldering is not recommended Toshiba recommend that soldering be performed without the optical module mounted on the board Then after the board has been cleaned the optical module should be soldered on to the board manually If the optical module cannot be soldered manually use non halogen chlorine free flux and make sure without cleaning there is no residue such as chlorine This is one of the ways to eliminate the eff
8. iber optical transceiving module Solder the fixed pin pins 9 and 10 of fiber optic transceiving module TODX297 to the printed circuit board to fix the module to the board Shielding and wiring pattern of fiber optic transceiving modules To shield connect the fixed pins pins 9 and 10 of fiber optic transceiving module TODX297 to the GND Where the fiber optic transceiving module uses conductive resin be careful that the case does not touch wiring including land To improve noise resistance shield the optical module and the power line filter using a metallic cover 7 2001 07 26 TOSHIBA TODX297 8 9 10 11 12 13 14 15 Solvent When using solvent for flux removal do not use a high acid or high alkali solvent Be careful not to pour solvent in to the optical connector ports If solvent is inadvertently poured in to them clean it off using cotton tips Protective cap When the TODX297 is not in use attach the protective cap Supply voltage Use the supply voltage within the recommended operating condition VCC 5 0 25 V Make sure that supply voltage does not exceed the maximum rating value of 7 V even for an instant Input voltage If a voltage exceeding the maximum rating value Vcc 0 5 V is applied to the transmitter input the internal IC may suffer damage If there is a possibility that excessive voltage due to surges may be added to the input terminal insert a protective circuit
9. istortion ns Pulse width distortion ns Atw Vcc Receiving side Ta 25 C APF Cy 10 pF Pulse width 165 ns Pulse cycle 330 ns sews PrN 9 dBm oo PIN 28 dBm 4 75 5 0 5 25 Supply voltage V Ta 25 C Vec 5 V Pulse width 165 ns Pulse cycle 330 ns PIN 20 dBm APF Cy 10 pF 40 20 0 TODX297 Atw Ta Receiving side 25 50 70 85 100 Ambient temperature C Atw PIN Ta 25 C Voc 5V Pulse width 165 ns Pulse cycle 330 ns APF Cy 10 pF 28 26 24 22 20 18 16 14 12 10 8 Received optical power dBm Note 7 There give characteristic examples and its values are not guaranteed 4 2001 07 26 TOSHIBA TODX297 PMAX VCC PMIN VCC Ta 25 C Ta 25 C Variation of Maximum received power dB Variation of Minimum received power dB 4 75 5 0 5 25 4 75 5 0 5 25 Supply voltage V Supply voltage V PMAX Ta zm 4 Veco 5V 3H 6 Mb s NRZ random pattern 3 Es 2F ge gt E 1H oF 5 E i S ab g S a 8f R o aod 60 40 20 0 25 50 70 85 Ambient temperature C PMIN Ta dB Voc 5Vv 6 Mb s NRZ random pattern Variation of Minimum received power 60 40 20 0 25 50 70 85 100 Ambient temperature C Note 7 There give characteristic examples and its values are not guaranteed 5 2001 07 26 TOSHIBA 5 Application Circuit GND o
10. ng APF Note 3 9 com Minimum Receivable Power Note 6 DC to 6 Mb s Using APF Note 3 am Note 2 LED is on when input signal is high level it is off when low level High level output when optical flux is received Low level output when it is not received Note 3 All Plastic Fiber 980 1000 um Note 4 Between input of TODX297 and output of TODX297 Note 5 Measure with a standard optical fiber with fiber optic connectors Valued by peak Note 6 BER lt 10 Valued by peak 2 2001 07 26 TOSHIBA TODX297 Example of Typical Characteristics Note 7 Atw Vcc Transmitting side Pf Vcc Ta 25 C Pulse width 165 ns Pulse cycle 330 ns Ta 25 C R 4 3 kQ Peak value ee Variation of pulse width distortion ns Variation of fiber output power dB 4 75 5 0 5 25 4 75 5 0 5 25 Supply voltage V Supply voltage V Pf Ta Vcc 5V R 43kQ Peak value Variation of fiber output power dB 60 40 20 0 25 50 70 85 100 Ambient temperature C Atw Ta Transmitting side Ta 25 C Voc 5V Pulse width 165 ns Pulse cycle 330 ns R 43kQ ee ee ee ee eee Variation of pulse width distortion ns 60 40 20 0 25 50 70 85 100 Ambient temperature C Note 7 There give characteristic examples and its values are not guaranteed 3 2001 07 26 TOSHIBA Variation of pulse width distortion ns Variation of pulse width d
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TOSHIBA FIBER OPTIC TRANSCEIVING MODULE TODX297 handbook