OCP DTR-2488-SM2-LC/LS-W-G-CWDM OC-48/STM-16 2x10 SFF Single Mode CWDM Transceivers Features ; Eight (8) Wavelength CWDM Transceivers ; Compliant with SONET/SDH OC-48/STM-16 IR-2/S-16.2 & LR-2/L-16.2 Specifications ; Eye Safe (Class I Laser Safety) ; Multi-sourced 2x10 Package Style ; Duplex LC Optical Interface ; Differential Bias Monitor Voltage & Back Facet Monitor Voltage Outputs ; Receiver Power Monitor Output ; AC Coupling or DC Coupling Option to LV-PECL DATA Compatible Interface ; LV-TTL SIGNAL DETECT Output ; Single +3.3V Power Supply Description The DTR-2488-SM2-LC/LS-W-G-CWDM SFF series of fiber optic transceivers provide a quick and reliable interface for intermediate reach (IR-2) and long reach (LR-2) applications. Products under this series are compliant with SONET/SDH OC-48/STM-16 (2.488Gb/s) standards for IR-2/S-16.2 intermediate reach and LR-2/L-16.2 long reach applications ,and are available in eight (8) wavelengths: 1470nm, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm and 1610nm. Two performance options are available. In option L0, a guaranteed minimum optical power of -5dBm is offered with a PIN receiver that corresponds to a link distance of 15km (assuming fiber loss of 0.25dB/km). In option HP, a guaranteed minimum optical power of -2dBm is offered with an APD receiver that corresponds to a link distance of 80km (assuming fiber loss of 0.25dB/km). All modules satisfy Class I Laser Safety requirements in accordance with the U.S. FDA/CDRH and international IEC-60825 standards. width two-row, 20-pin (2x10) package with a duplex LC optical interface. The receptacle fits into an RJ-45 form factor outline. The 20-pin configuration is in conformance to the SFF MSA. The transmitter design incorporates all the necessary control and driver circuitry for converting differential data to light. The receiver uses an InGaAs/InP PIN photodiode for IR-2 applications and an APD photodiode for LR-2 applications to covert the light signal into an electrical current which is amplified and regenerated into differential data outputs. ACcoupled transmit and receive DATA interface is recommended for compatibility with LV-PECL signal levels. An option for DC-coupled interface is also available. LV-TTL SIGNAL DETECT function which indicates loss of optical input is also provided. The transceivers operate from a single +3.3V power supply over an operating case temperature range of -5°C to +70°C. The package is made of metal for excellent EMI immunity. The transmit and receive functions are contained in a narrow Absolute Maximum Ratings Parameter Storage Temperature Operating Case Temperature Maximum Input Optical Power (LR-2 only, 60 seconds max.) Symbol Minimum Maximum Units Tst - 40 + 85 °C Top -5 + 70 °C Pin, max - + 3.0 dBm Supply Voltage VCC 0 + 5.0 V Input Voltage Vin 0 VCC V Output Current IO - 50 mA Lead Soldering Temperature & Time - - 260°C, 10 seconds Optical Communication Products, Inc. 1 21737-0266, Rev. D 07-06-2005 DTR-2488-SM2-LC/LS-W-G-CWDM Transmitter Performance Characteristics (over Operating Case Temperature Range, VCC = 3.13 to 3.47V) All parameters guaranteed only at typical data rate Parameter Operating Data Rate Symbol Minimum Typical Maximum Units B - 2.488 - Gb/s - 5.0 - 2.0 0 - 2.0 0 + 3.0 1 Average Optical Output Power (coupled into single mode fiber) 50% duty cycle Extinction Ratio L0 Po HP Phi /Plo 8.2 - - 1470 1464 1470 1477.5 1490 1484 1490 1497.5 1510 1504 1510 1517.5 1524 1530 1537.5 1544 1550 1557.5 1570 1564 1570 1577.5 1590 1584 1590 1597.5 1530 Center Wavelength λc 1550 1610 Spectral Width (-20dB) Side Mode Suppression Ratio IR-2 Dispersion Penalty dB nm 1604 1610 1617.5 ∆λ20 - - 1.0 nm SMSR 30 - - dB - - 1.0 - - 2.0 - LR-22 dBm dB Optical Output Eye Compliant with Telcordia GR-253-CORE and ITU-T Recommendation G.957 Data rate ranges from 155Mb/s to 2.7Gb/s. However, some degradation may be incurred in overall performance. 2 Specified at 1600ps/nm dispersion, which corresponds to the approximate worse-case dispersion for 80km G.652/G.654 fiber over the wavelength range of 1464 -1617.5nm. 1 Receiver Performance Characteristics (over Operating Case Temperature Range, VCC = 3.13 to 3.47V) All parameters guaranteed only at typical data rate Parameter Symbol Minimum Typical Maximum Units B - 2.488 - Gb/s 1 Operating Data Rate Receiver Sensitivity (10-10 BER)2 Maximum Input Optical Power (10-10 BER)2 SIGNAL DETECT Thresholds IR-2 LR-2 IR-2 Pmin LR-2 IR-2 Increasing Light input - - - 29.0 - 31.0 - 0 + 1.0 - - 8.0 - - Psd+ - - - 19.0 Pmax LR-2 - 19.0 Decreasing Light Input Psd- - 42.0 - - Increasing Light input Psd+ - - - 29.0 Decreasing Light Input dBm dBm dBm Psd- - 42.0 - - SIGNAL DETECT Timing - 3.0 - 100 µs SIGNAL DETECT Hysteresis λ 0.5 1.0 - dB 1260 - 1620 nm Wavelength of Operation Jitter Tolerance & Transfer Function Compliant with ITU Recommendation G.958 1 Data rate ranges from 155Mb/s to 2.7Gb/s. However, some degradation may be incurred in overall performance. Specified in average input optical power and measured at 2.488Gb/s and 1550nm with 223-1 PRBS. 2 Laser Safety: All transmitters are Class I Laser products per FDA/CDRH and IEC-60825 standards. They must be operated under specified operating conditions. Optical Communication Products, Inc. DATE OF MANUFACTURE: MANUFACTURED IN THE USA This product complies with 21 CFR 1040.10 and 1040.11 Meets Class I Laser Safety Requirements 2 21737-0266, Rev. D 07-06-2005 DTR-2488-SM2-LC/LS-W-G-CWDM Transmitter Electrical Interface (over Operating Case Temperature Range, VCC = 3.13 to 3.47V) Parameter Symbol Minimum Typical Maximum Units VINDIF 0.30 0.80 1.60 VP-P Input Impedance ZIL - 50 - Ω Transmitter Disable Voltage VDIS VCC - 1.3 - VCC V Transmitter Enable Voltage VEN 0 - 0.8 V Differential Bias Monitor Voltage (Ta = 25°C) VBM+ - VBM- 0.10 - 0.70 V Differential Back Facet Monitor Voltage VFM+ - VFM- - 30 - mV Input Voltage Swing between DATA+ & DATA- Receiver Electrical Interface (over Operating Case Temperature Range, VCC = 3.13 to 3.47V) Parameter Output Voltage Swing 1,2 Output Current Output HIGH Voltage (LV-TTL) Output LOW Voltage (LV-TTL) 3 Receiver Power Monitor Current Symbol Minimum Typical Maximum Units Vp-p 0.3 - 0.8 V IO - - 25 mA VOH 2.0 - VCC V VOL 0 - 0.4 V 1.3 µΑ/µW 0.6 IRPM 0.85 1 Single ended into 50Ω load. 2 DC-coupled version is also available (50Ω to VCC - 2V termination) with output HIGH voltage level of VCC - 1.10V min. and VCC - 0.90V max. The output LOW voltage (LV-PECL) is VCC - 1.84V min. and VCC - 1.60V max. 3 Power input, RPM is specified from -29dBm to -17dBm for APD and 0dBm to -19dBm for PIN. Electrical Power Supply Characteristics (over Operating Case Temperature Range, VCC = 3.13 to 3.47V) Parameter Supply Voltage 1 Supply Current Symbol Minimum Typical Maximum Units VCC 3.13 3.3 3.47 V ICC - 195 310 mA 1 Supply current does not include termination resistor current for DC-coupled version. Pin Assignments PIN FUNCTION PIN 1 RPM (Reciever Power Monitor) 11 VCCTX 2 RX GND 12 TX GND 3 RX GND 13 TX DISABLE Laser Bias & Laser Back Facet Monitor Circuits FUNCTION VCC VCC LD PD Ib 4 N/C 14 TD+ (TX DATA IN+) 5 N/C 15 TD- (TX DATA IN-) BM+ 3kΩ 10Ω RX GND 16 TX GND 7 VCCRX 17 BM- (BIAS MONITOR-) 8 SD (RX SIGNAL DETECT) 18 BM+ (BIAS MONITOR +) 9 RD- ( RX DATA OUT-) 19 FM- (FACET MONITOR-) 20 FM+ (FACET MONITOR+) LD Bias Monitor Circuit 3 3kΩ BM- FMControl Circuit Bias Circuit GND 10 RD+ ( RX DATA OUT+) FM+ 200Ω 3kΩ 6 3kΩ Imon GND LD Back Facet Monitor Circuit 21737-0266, Rev. D 07-06-2005 DTR-2488-SM2-LC/LS-W-G-CWDM Fig.1 DC-coupled modules Receiver Power Monitor option 1 Vcc +3.3V Capacitor values in µ F, Resistor values in Ω 1µH coil or ferrite inductor Vcc + 0.1 10 0.1 160 DTR-2488 External resistor 1µH coil or 1 + ferrite inductor 10 7 14 TD+ 11 0.1 100 8 DTR-2488-SM2 RPM (see Power Monitor Options) 806Ω 9 100 LV-PECL 50Ω line RD- GND 2,3,6 POSTS 12,16 Recommended external current monitor resistor value is 1kΩ 50Ω line 10 RD+ 1 LV-PECL 50Ω line 15 TD- SIGNAL DETECT 160 50Ω line 160 160 chassis ground Fig.2 AC-coupled modules Receiver Power Monitor option 2 Vcc +3.3V Vcc Capacitor values in µF, Resistor values in Ω 1µH coil or ferrite inductor + 0.1 DTR-2488 depends on SERDES 10 0.1 160 R1 R1 1µH coil or 2N3906 or equivalent 1 AD8551 or equivalent RPM R2 806Ω + ferrite inductor 10 7 14 TD+ 11 0.1 100 15 TD- SIGNAL DETECT 8 DTR-2488-SM2 1 RPM (see Power Monitor Options) 10 RD+ 9 GND 2,3,6 POSTS 12,16 R1: 510Ω R2: 2kΩ recommended RD- 160 50Ω line 50Ω line SERDES 50Ω line 50Ω line 100 depends on SERDES chassis ground Application Notes DATA interface (DC-coupled modules): The interface circuit for standard DC-coupled modules with direct-coupled LV-PECL interface is shown in Fig. 1. The transmitter input has internal 50Ω termination. SIGNAL DETECT: The SIGNAL DETECT circuit monitors the incoming optical signal level and generates a logic LOW signal when an insufficient photocurrent is produced. The output is LV-TTL with no termination required. DATA interface (AC-coupled modules): For modules with AC coupling option, both transmitter and receiver interfaces have internal bias, 50Ω termination and AC coupling capacitors. The transmitter can be connected directly to the driving SERDES as shown in Fig. 2. The receiver can be connected directly to the external 50Ω loads (termination resistor of the SERDES). For best performance, both DATA+ & DATAshould be used. TX DISABLE: The transmitter is normally enabled (i.e. when the TX DISABLE control input is not connected). When the TX DISABLE control input voltage is higher than VCC - 1.3V, the laser is turned off independent of the input data. Power supply and grounding: The power supply line should be well-filtered. All 0.1µF power supply bypass capacitors should be as close to the DTR transceiver module as possible. The module case ground is internally AC-coupled to the circuit ground. 4 21737-0266, Rev. D 07-06-2005 DTR-2488-SM2-LC/LS-W-G-CWDM 48.39 1.905 Package without EMI Shield (LC) 10.49 .413 RX [13.56 MAX] 13.11 .516 .535 MAX TX 6.25 .246 9.35 .37 [9.78 MAX] .385 MAX 0.38 .015 TYP (X)* (Y)* 0.25 2x .010 1.02 2X .040 PIN 11 2X 2.54 .100 10.16 .400 1.91 2X .075 *(x) & (y): See Pin Length Option Table in Ordering Information PIN 1 PIN 10 8.89 .350 1.78 .070 TYP [0.46] .018 Package with EMI Shield (LS) Dimensions in inches [mm] Default tolerances: .xxx = + .005”, .xx = + .01” 18.54 .730 48.39 1.905 10.49 .413 RX [13.56 MAX] .535 MAX TX 3.5 .14 [9.78 MAX] .385 MAX 9.65 .38 0.38 .015 TYP PIN 11 2X 2.54 2X .100 1.02 .040 [13.59 +0/-0.254] .535 +0/-.01 10.16 .400 1.91 2X .075 [11] .43 (Y)* (X)* 0.25 2X .010 6.25 .246 PIN 10 [0.46] 0.18 PIN 1 1.78 .070 TYP 8.89 .350 18.54 .730 5 15.6 .62 *(x) & (y): See Pin Length Option Table in Ordering Information Dimensions in inches [mm] Default tolerances: .xxx = + .005”, .xx = + .01” 21737-0266, Rev. D 07-06-2005 DTR-2488-SM2-LC/LS-W-G-CWDM Package with Extended EMI Shield (S1) 48.39 1.905 15.11 .60 RX [13.56 MAX] .535 MAX TX 14.09 .555 15.01 .59 6.25 .246 3.6 .14 9.65 .38 [9.78 MAX] .385 MAX 11.9 .47 0.38 .015 TYP (X)* (Y)* PIN 11 2X 1.02 .040 2X [13.59 +0/-0.254] .535 +0/-.01 10.16 .400 1.91 .075 2.54 .100 15.6 .62 PIN 1 PIN 10 [0.46] 0.18 TYP 8.89 .350 1.78 .070 TYP *(x) & (y): See Pin Length Option Table in Ordering Information Dimensions in inches [mm] Default tolerances: .xxx = + .005”, .xx = + .01” 18.54 .730 Ordering Information DTR - 2488 - SM2 - Lx - Ln - DR - XX - Wp - G - Cxxx - S1 Connector LC : w/o EMI Shield LS : w/ EMI Shield or w/ Extended S1 Shield Extended Shield “Blank” : None “S1” : Extended EMI Shield Light Output Option L0 : -5 to 0dBm (IR-2) HP : -2 to +3dBm (LR-2) Center Wavelength C470: 1470nm C490: 1490nm C510: 1510nm C530: 1530nm C550: 1550nm C570: 1570nm C590: 1590nm C610: 1610nm Distance Option (see Note) IR2 : IR-2/S-16.2 (42/15km) LR2 : LR-2/L-16.2 (80km) Pin Length Option Table Options (p) Pin Length (x) Inches Post Length (y) Millimeters Inches Millimeters "blank" 0.140 + 0.010 3.56 + 0.250 0.125 + 0.010 - 0.005 3.17 + 0.250 - 0.125 5 0.155 + 0.010 3.94 + 0.250 0.155 + 0.010 - 0.005 3.94 + 0.250 - 0.125 4.57 + 0.250 0.180 + 0.010 - 0.005 4.57 + 0.250 - 0.125 8 0.180 + 0.010 see Pin Length Option Table Receiver Coupling Option “Blank” : DC Coupling “AC” : AC Coupling Note: These are target distances to be used for classification and not for specification, per Telcordia GR-253-CORE/ITU-T Recommendation G.957. Optical Communication Products, Inc. 6101 Variel Avenue, Woodland Hills, CA 91367, Tel.: 818-251-7100, FAX: 818-251-7111, www.ocp-inc.com Optical Communication Products, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Optical Communication Products, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Optical Communication Products, Inc. for its use nor for any infringements of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Optical Communication Products, Inc. © 2005, Optical Communication Products, Inc. 6 21737-0266, Rev. D 07-06-2005