Data Sheet February 2003 TriQuint Optoelectronics 1241/1243/1245-Type Uncooled Laser Transmitters Features t uinCTOR TSrEiMQICONDU U (R) i tt ype ransm T 1 124 aser T L d ole o c n er Space-saving, self-contained, 20-pin DIP Uses field-proven, reliable InGaAsP MQW laser Requires single 5 V power supply SONET/SDH compatible Offering multiple output power options and SONET/SDH compatibility, the 1241/1243-Type Uncooled Laser Transmitter is manufactured in a 20-pin, plastic DIP with a single-mode fiber pigtail. er e nsmitt p y ra 1 -T 124 aser T L led 1241-Type co o UnUncooled Laser Transmitter Backward compatible with 1227/1229/1238-Type Laser Transmitters Uncooled laser with automatic optical power control for constant output power over case temperature range No thermoelectric cooler required; reduces size and power consumption Uses low-power dissipation CMOS technology Qualified to meet the intent of Telcordia Technologies TM reliability practices Operates over data rates to 1062.5 Mb/s (NRZ) Operation at 1.3 m or 1.55 m wavelength Typical average output power options of -11 dBm, -8 dBm, -5 dBm, -2 dBm, and 0 dBm ECL compatible, differential inputs Operating temperature range of -40 C to +85 C Transmitter-disable option Applications Telecommunications -- Inter- and intraoffice SONET/ITU-T SDH -- Subscriber loop -- Metropolitan area networks High-speed data communications -- Fibre channel (FC-0) Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Description The 1241/1243/1245-type Laser Transmitters are designed for use in transmission systems and highspeed data communication applications. Used in intraoffice and intermediate-reach applications, the transmitters are configured to operate at SONET rates up to OC-12, as well as at ITU-T synchronous digital hierarchy (SDH) rates up to STM-4. Specific versions are also capable of operating up to 1062.5 Mb/s. The transmitter meets all present Telcordia Technologies GR-253-CORE requirements, ANSI T1.117-1991 SONET single-mode, and the ITU-T G.957 and G.958 recommendations. (See Table 5 to select transmitters for the various SONET/SDH segments.) The transmitter requires a single power supply (+5 V or -5 V) and operates over data rates of 1 Mb/s to 622 Mb/s (NRZ). Automatic power control circuitry provides constant optical output power over the operating case temperature range. The automatic power control circuitry also compensates for laser aging. The optical wavelength tolerance at 25 C is 1310 nm. The temperature coefficient of wavelength for 1.3 m Fabry-Perot transmitters (1241-Type) is approximately 0.4 nm/C. The temperature coefficient of wavelength for 1.3 m and 1.55 m distributed-feedback (DFB) transmitters (1243/1245-Type) is approximately 0.1 nm/C. Transmitters are available for operation over several different temperature ranges from -40 C to +85 C. Manufactured in a 20-pin DIP, the transmitter consists of a hermetic, InGaAs laser and a single CMOS driver IC. The low-power consumption circuit provides modulation, automatic optical output power control, and data reference. The module can be driven by either ac- or dc-coupled data in single-ended or differential configuration. (See Recommended User Interfaces section for typical connection schemes.) The laser bias and backfacet monitor currents are electrically accessible for transmitter performance monitoring. The transmitter optical output may be disabled by a logic-level input. Functional Overview Transmitter Circuit Description and Operation Figure 1 shows a simplified schematic of the transmitter; pin information is listed in Table 1. The laser within the transmitter is driven by a single CMOS integrated circuit, which provides the input data signal reference level with automatic, temperature-compensated laser bias, and modulation-current control. A back-facet photodetector diode within the laser module provides an 2 indication of the laser's average optical output power. The back-facet diode current is accessible as a voltage proportional to photocurrent through pins 17 and 19 on the transmitter. The back-facet diode also forms part of the feedback control circuit, which helps maintain constant output power. The laser bias current is accessible as a dc-voltage by measuring the voltage developed across pins 2 and 4 of the transmitter. Dividing this voltage by 10 will yield the value of the laser bias current. This value will change up or down in response to operating temperature, power supply voltage, data pattern, and laser aging characteristics. Table 1. Pin Descriptions Pin Number Name 1 No user connection* 2 Laser bias monitor (+) 3 No user connection* 4 Laser bias monitor (-) 5 VEE 6 VCC 7 Transmitter disable 8 VCC 9 VCC 10 No user connection 11 Case ground (RF ground) 12 VCC 13 Case ground (RF ground) 14 VEE 15 DATA 16 DATA 17 Laser back-facet monitor (-)* 18 VCC 19 Laser back-facet monitor (+)* 20 No user connection * Pins designated as no user connection should not be tied to ground or any other circuit potential. Laser back-facet and bias monitor functions are customer-use options that are not required for normal operations of the transmitter. They are normally used during manufacture and for diagnostics. For additional information and latest specifications, see our website: www.triquint.com 1241/1243/1245-Type Uncooled Laser Transmitters Data Sheet February 2003 Functional Overview (continued) 1-868(C).h Figure 1. Simplified Transmitter Schematic Input Data Input Data Minimum Data Rate Data enters the transmitter through a comparator. These inputs have internal pull-down resistors to a voltage reference that is 1.3 V below VCC. This configuration allows the transmitter to be driven from either a single-ended or a differential input signal. Since the input is a comparator instead of a gate, the absolute input signal levels are not important when the inputs are driven differentially. When driven single-ended, however, the input signal voltage should be centered around VCC - 1.3 V to eliminate pulse-width distortion. With a single-ended input, either input can be used and the unused input can be left as an open circuit due to the internal reference shown in Figure 1. The optical output signal will be in the same sense as the input data--an input logic high turns the laser diode on and an input logic low turns the laser diode off. However, if the negative input is used with a single-ended data input signal, the optical signal will be the complement of the data input signal. Because the modulation and bias control circuitry are influenced by the input data pattern, the standard transmitter cannot be used in burst-mode type applications. For burst-mode applications, please contact your TriQuint Account Manager. The minimum data rate (pseudorandom data, 50% average duty cycle) for the 1241/1243/1245-Type Transmitters is approximately 1 Mb/s. The differential inputs of the 1241 Gbit versions are terminated internally with 100 between the DATA and DATA inputs. For additional information and latest specifications, see our website: www.triquint.com 3 Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Functional Overview (continued) Since most applications operate at very high data rates, high-frequency design techniques need to be used to ensure optimum performance from the transmitter and interfacing circuitry. Input signal paths should be kept as short and as straight as possible; differential signal lines should be equal in length, and controlled-impedance stripline or microstrip construction should always be used when laying out the printed-wiring board traces for the data lines. The Recommended User Interfaces section of this data sheet shows several methods of interfacing to the transmitter. buffered outer-jacket. The standard length is 39 in. 4 in. (1 m 10 cm) and can be terminated with either an SC or FC-PC optical connector. Other connector options may be available on special order. Contact your TriQuint Account Manager for ordering information. Handling Precautions Power Supplies CAUTION: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper precautions during both handling and testing. Follow guidelines such as JEDEC Publication No. 108-A (Dec. 1988). The transmitter is configured for operation from either a single +5 V power supply or a single -5 V power supply. For positive power supply operation, connect Vcc to the +5 V power supply and connect VEE to ground or circuit common. For operation from a -5 V power supply, connect VCC to ground and connect VEE to the -5 V power supply. Whichever option is chosen, the VCC or VEE connection to the transmitter should be well filtered to prevent power supply noise from interfering with transmitter operation. Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD. TriQuint employs a human-body model (HBM) for ESD-susceptibility testing and protection-design evaluation. ESD voltage thresholds are dependent on the critical parameters used to define the model. A standard HBM (resistance = 1.5 k, capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM ESD withstand voltage established for the 1241-/1243-Type Transmitter is 1000 V. Transmitter Specifications Optical Output Power During manufacture, the optical output power of every transmitter is tuned to the typical value specified in the data sheet for that particular transmitter code. The tuning is performed at room ambient and a power supply voltage of 5 V. The minimum and maximum values listed in the data sheet for each code group reflect the worst-case limits that the transmitter is expected to operate within over its lifetime and over the allowed power supply and the operating temperature range. Every transmitter shipped receives a final test, which includes a SONET eye-mask test at either the OC-3 (STM-1) data rate of 155.52 Mb/s, the OC-12 (STM4) data rate of 622.08 Mb/s, or the fibre channel FC-0 data rate of 1062.5 Mb/s. The eye-mask test is meant to examine the performance of the transmitter's output optical waveform relative to a minimum data pattern eye opening. Connector Options Transmitter Processing The transmitter can withstand normal wave-soldering processes. The complete transmitter module is not hermetically sealed; therefore, it should not be immersed in or sprayed with any cleaning solution or solvents. The process cap and fiber pigtail jacket deformation temperature is 85 C. Transmitter pins can be wavesoldered at maximum temperature of 250 C for 10 seconds. Installation Considerations Although the transmitter features a robust design, care should be used during handling. The optical connector should be kept free from dust, and the process cap should be kept in place as a dust cover when the device is not connected to a cable. If contamination is present on the optical connector, canned air with an extension tube can be used to remove any debris. Other cleaning procedures are identified in the technical note, Cleaning Fiber-Optic Assemblies (TN95010LWP). The standard optical fiber pigtail is 8 m core singlemode fiber having a 0.036 in. (914 m) diameter tight4 For additional information and latest specifications, see our website: www.triquint.com Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Min Max Unit -- -- 5.5 V TC -40 85 C Storage Case Temperature Range Tstg -40 85 C Lead Soldering Temperature/Time -- -- 250/10 C/s Relative Humidity (noncondensing) RH -- 85 % Minimum Fiber Bend Radius -- 1.00 (25.4) -- in. (mm) Supply Voltage* Operating Case Temperature Range * With VEE connected to -5 V, VCC must be at 0 V; with VCC connected to +5 V, VEE must be at 0 V. Specification depends upon the code ordered. The device is capable of a cold start at -40 C; specifications are met after a warm-up time determined by the system thermal design. Characteristics Minimum and maximum values specified over operating case temperature range at 50% duty cycle data signal and end of life (EOL). Typical values are measured at beginning-of-life (BOL) room temperature unless otherwise noted. Table 2. Electrical Characteristics Parameter Power Supply Voltage1 Power Supply Current Drain Input Data Low High Symbol Min Typ Max Unit V 4.75 5.0 5.50 V ITOTAL -- 30 130 mA VIL VIH -1.81 -1.16 -- -- -1.47 -0.88 V V tI -- t/4 -- ns VD VCC - 2.0 -- VCC V Voltage:2 Input Transition Time3 Transmitter Disable Voltage4 Transmitter Enable Voltage VEN VEE -- VEE + 0.8 V Output Disable Time5 tD -- -- 0.20 s Output Enable Time6 tEN -- -- 2.00 s VB 0.01 0.06 0.70 V VBF 0.01 0.05 0.20 V Laser Bias Voltage7 Laser Monitor Voltage (50% duty cycle)8 1. With VEE connected to -5 V, VCC must be at 0 V; with VCC connected to +5 V, VEE must be at 0 V. 2. Input measured from VCC with 50 load to (VCC - 2 V). 10K, 10K H, and 100K ECL compatible. 3. Between 10% and 90% (50% duty cycle) where t is the bit period in ns. 4. The transmitter is normally enabled and only requires an external voltage to disable. 5. Time measured from rising edge of disable signal until optical output (laser diode) has turned off. 6. Time measured from falling edge of enable signal until optical output has stabilized at nominal output power level. 7. The laser bias current is obtained by dividing the bias voltage by the 10 current-sensing resistors. (See Figure 1.) When measuring these voltages or using them in conjunction with alarm circuits, use a high-input impedance device. 8. The laser back-facet monitor voltage is a scaled output that tracks the transmitter optical output power. For additional information and latest specifications, see our website: www.triquint.com 5 Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Characteristics (continued) Table 3. Optical Characteristics Parameter Average Power Output Extinction Symbol Options1 Ratio2 Optical Rise and Fall OC-3/STM-1 OC-12/STM4 1062.5 Mb/s Typ Max Unit PO See Ordering Information. dBm rE 10 -- -- dB t R, t F t R, t F t R, t F -- -- -- -- -- -- 1.0 0.5 0.37 ns ns ns Times3: Center Wavelength RMS Spectral Min Width4 Side-mode Suppression Ratio5 See Ordering Information. nm -- -- 4 nm SMSR 30 -- -- dB 1. Output power definitions and measurement per ITU-T Recommendation G.957 and G.958. 2. Ratio of logic 1 to logic 0 power levels. 3. Between 10% and 90% (50% duty cycle). 4. Root-mean-square spectral width accounts for modes up to and including those 20 dB down from the central mode. (Applies to 1241-Type only.) 5. Applies to 1243/1245-Type only. Recommended User Interfaces * Locate these components as close to DATA/DATA inputs as possible. 1-496(C).c Note: The 1241 gigabit version does not require the external 50 terminations since this termination is included inside the module. Figure 2. dc-Coupled, Differential Input 6 For additional information and latest specifications, see our website: www.triquint.com 1241/1243/1245-Type Uncooled Laser Transmitters Data Sheet February 2003 Recommended User Interfaces (continued) Note: Input can also be connected to DATA; unused input pin remains unconnected. (622 Mb/s and below only.) 1-497(C) Figure 3. dc-coupled, Single-Ended Input * This network introduces a slight offset between DATA and DATA, which turns the laser transmitter off when there is no data present at the inputs. (622 Mb/s and below only.) 1-498(C) Figure 4. ac-Coupled, Single-Ended Input Qualification and Reliability To help ensure high product reliability and customer satisfaction, TriQuint is committed to an intensive quality program that starts in the design phase and proceeds through the manufacturing process. Optoelectronics modules are qualified to TriQuint internal standards using MIL-STD-883 test methods and procedures and using sampling techniques consistent with Telcordia requirements. The 1241/1243/1245 series of transmitters have undergone an extensive and rigorous set of qualification tests. This qualification program fully meets the intent of Telcordia reliability practices TR-NWT-000468 and TA-NWT-000983. In addition, the design, development, and manufacturing facility of the Optoelectronics unit at TriQuint Semiconductor has been certified to be in full compliance with the latest ISO (R)-9001 Quality System Standards. For additional information and latest specifications, see our website: www.triquint.com 7 Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Outline Diagram Dimensions are in inches and (millimeters). Unless otherwise noted, tolerances are 0.005 in (0.127 mm). 1-987C).a 8 For additional information and latest specifications, see our website: www.triquint.com Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Laser Safety Information Class I Laser Product All versions of the 1241/1243/1245-Type transmitters are Class I laser products per CDRH, 21 CFR 1040 Laser Safety requirements. The 1241/1243/1245-Type transmitters have been classified with the FDA under accession number 8720009. All versions are Class I laser products per IEC (R) 60825-1:1993. CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in hazardous laser radiation exposure. This product complies with 21 CFR 1040.10 and 1040.11. 8.8 m single-mode pigtail with connector Wavelength = 1.3 m Maximum power = 1.6 mW Notice Unterminated optical connectors may emit laser radiation. Do not view with optical instruments. Table 4. TriQuint Transmitters for SONET/SDH Applications 1.3 m Transmitter Type* Connector Type Short and Intermediate Reach (<2 km and ~15 km) 1.55 m Transmitter Type Long Reach ~40 km Long Reach ~80 km OC-3/ STM-1 OC-12/ STM-4 OC-3/ STM-1 OC-12/ STM-4 OC-3/ STM-1 OC-12/ STM-4 FC-PC 1241FAUC 1241FBUC 1243FAFD 1243FBDC 1245FAFC 1245FBDC SC 1241CAUC 1241CBUC 1243CAFD 1243CBDC 1245CAFC 1245CBDC * Full SONET/SDH compliance, -40 C to +85 C. Full SONET/SDH compliance, -20 C to +70 C. For additional information and latest specifications, see our website: www.triquint.com 9 Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Ordering Information Table 5. 1241/1243/1245-Type Transmitter Ordering Information OC-3/STM-1 Transmitter Codes Operating Case Temp. Range (C) Average Output Power (dBM) Center Wavelength (nm) Connector 122x Equivalent Product Order Code Comcode Min Max Min Typ Max Min Max 0 65 -3 0 2 1290 1330 FC-PC 1227AE 1241FADC 108123449 0 65 -3 0 2 1290 1330 SC 1227AF 1241CADC 108123480 0 65 -5 -2 0 1280 1335 FC-PC 1227YA 1241FAFC 108123357 0 65 -5 -2 0 1280 1335 SC 1227YB 1241CAFC 108123373 0 65 -8 -5 -2 1260 1360 SC 1227CA 1241CALC 108123324 0 65 -8 -5 -2 1260 1360 FC-PC 1227C 1241FALC 108123563 -20 70 -5 -2 0 1480 1580 SC 1229CB5 1245CAFC 108400409 -20 70 -5 -2 0 1480 1580 FC-PC 1229FB5 1245FAFC 108400417 -40 85 -5 -2 0 1280 1335 SC 1227YD 1243CAFD 108123423 -40 85 -5 -2 0 1280 1335 FC-PC 1227YE 1243FAFD 108123415 -40 85 -12 -8 -5 1260 1360 SC 1227FB 1241CAPC 108123282 -40 85 -12 -8 -5 1260 1360 FC-PC 1227F 1241FAPC 108123266 108123209 -40 85 -15 -11 -8 1260 1360 SC 1227HA 1241CAUC* -40 85 -15 -11 -8 1260 1360 FC-PC 1227H 1241FAUC* 108123159 OC-12/STM-4 Transmitter Codes 0 65 -3 0 2 1290 1330 FC-PC 1227AK 1241FBDC 108123456 0 65 -3 0 2 1290 1330 SC 1227AN 1241CBDC 108123498 0 65 -8 -5 -2 1260 1360 FC-PC 1227D 1241FBLC 108123316 -20 70 -3 0 2 1480 1580 SC 1229CA5 1245CBDC 108400391 -20 70 -3 0 2 1480 1580 FC-PC 1229FA5 1245FBDC 108400425 -40 85 -3 0 2 1280 1335 FC-PC 1229FA 1243FBDC 108123506 -40 85 -3 0 2 1280 1335 SC 1229CA 1243CBDC 108123522 -40 85 -12 -8 -5 1260 1360 FC-PC 1227G 1241FBPC 108123274 -40 85 -15 -11 -8 1260 1360 FC-PC 1227AC 1241FBUC* 108123167 1227PG 1241CBU* 108123217 -40 85 -15 -11 -8 1274 1356 SC Fibre Channel--1062.5 Mb/s 10 65 -11 -8 -5 1260 1360 FC-PC 1238A 1241FCPC 108309287 10 65 -11 -8 -5 1260 1360 FC-PC 1238B 1241FCPD 108309295 10 65 -3 0 2 1290 1330 FC-PC 1238C 1241FCDC 108309279 * for these codes is 2.5 nm maximum. All other 1241-type codes are 4 nm maximum. 10 For additional information and latest specifications, see our website: www.triquint.com Data Sheet February 2003 1241/1243/1245-Type Uncooled Laser Transmitters Part Numbering for the 1241/1243/1245-Type Transmitter 1 2 4 X X X X X Field Description Laser Type: 1 = 1.3 m Fabry-Perot laser, 3 = 1.3 m DFB laser, 5 = 1.55 m DFB laser Optical Connector: C = SC, F = FC/PC Data Rate: A = 155 Mb/s, B = 622 Mb/s, C = 1062.5 Mb/s Typical Power: D = 0 dBm, F = -2 dBm, L = -5 dBm, P = -8 dBm, U = -11 dBm Customer Options: A--F Table 6. Related Products Description Device Number 155 Mb/s and 622 Mb/s for SONET/ 1340-Type Pin Receiver SDH Applications 155 Mb/s and 622 Mb/s Receivers with 1345-Type Pin Receiver with Clock and Data Recovery Clock and Data Recovery for SONET/ SDH Applications Document Number DS00-098 DS00-099 Telcordia Technologies is a trademark of Telcordia Technologies, Inc. ISO is a registered trademark of The International Organization for Standardization. IEC is a registered trademark of The International Electrotechnical Commission. Additional Information For the latest specifications, additional product information, worldwide sales and distribution locations, and information about TriQuint: Web: www.triquint.com Tel: (503) 615-9000 E-mail: info_opto@tqs.com Fax: (503) 615-8902 For technical questions and additional information on specific applications: E-mail: info_opto@tqs.com The information provided herein is believed to be reliable; TriQuint assumes no liability for inaccuracies or omissions. TriQuint assumes no responsibility for the use of this information, and all such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. TriQuint does not authorize or warranty any TriQuint product for use in life-support devices and/or systems. Copyright (c) 2003 TriQuint Semiconductor Inc. All rights reserved. DS99-228 Revision 1.1, February, 2003