OCP DTR-2488-SM2-LC/LS-W-G-MR Multi-rate OC-48/STM-16 2x10 SFF Single Mode Transceivers Features ; Data Rate Applications from 125Mb/s to 3.0Gb/s ; Compliant with SONET/SDH OC-48/STM-16 Specifications ; Short Reach and Intermediate Reach ; 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-MR SFF series of multirate fiber optic transceivers provide a quick and reliable interface for SONET/SDH OC-48/STM-16 short reach and intermediate reach applications. The transceivers are designed to operate from Fast Ethernet data rate (125Mb/s) to SONET/ SDH OC-48/STM-16 (2.488Gb/s). They are compliant with OC-48/STM-16 SONET/SDH specifications. The short reach (SR-1) version uses a 1310nm Fabry Perot laser while the intermediate reach (IR-1) version uses a 1310nm DFB laser to achieve reaches of 2km and 15km, respectively. For intermediate reach (IR-2) version, a 1550nm DFB laser is used to obtain the reach of 15km. All modules satisfy Class I Laser Safety requirements in accordance with the U.S. FDA/CDRH and international IEC-60825 standards. 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 to convert the light signal into an electrical current which is amplified and regenerated into differential data outputs. AC-coupled 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 or -40 °C to +85 °C (“A” option). The package is made of metal for excellent EMI immunity. The transmit and receive functions are contained in a narrow width two-row, 20-pin (2x10) package with a duplex LC optical Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Tst - 40 + 85 °C Storage Temperature Operating Case Temperature "Blank" option Top "A" option - 5.0 + 70 - 40 + 85 Supply Voltage VCC 0 + 5.0 °C 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 21737-0274, Rev. B 06-29-2005 DTR-2488-SM2-LC/LS-W-G-MR Transmitter Performance Characteristics (over Operating Case Temperature, VCC = 3.13 to 3.47V) Parameter Operating Data Rate Average Optical Output Power (coupled into single mode fiber) 50% duty cycle Extinction Ratio Symbol Minimum Typical Maximum Units B 0.125 - 3.00 Gb/s - 10.0 - 7.0 - 3.0 - 5.0 - 2.0 0 L1 Po L0 Phi /Plo SR-1 λc dBm 8.2 - - 1266 1310 1360 dB 1266 1310 1360 1430 1550 1580 - - 4.0 nm nm Center Wavelength IR-1 Spectral Width (RMS) SR-1 ∆λRMS Spectral Width (-20dB) IR-1, IR-2 ∆λ20 - - 1.0 nm Side Mode Suppression Ratio IR-1, IR-2 SMSR 30 - - dB - - - 1.0 dB IR-2 Dispersion Penalty Optical Output Eye Compliant with Telcordia GR-253-CORE and ITU-T Recommendation G.957 Receiver Performance Characteristics (over Operating Case Temperature, VCC = 3.13 to 3.47V) Parameter Symbol Operating Data Rate Receiver Sensitivity (10-10 BER)1 SR-1 Maximum Input Optical Power (10-10BER)1 Typical Maximum Units B 0.125 - 3.00 Gb/s Pmin - 19.0 - 20.0 - dBm Pmax IR-1, IR-2 Minimum - 3.0 - - 0 - - dBm Increasing Light Input Psd+ - - - 19.0 Decreasing Light Input Psd- - 35.0 - - SIGNAL DETECT Timing - 3 - 100 SIGNAL DETECT Hysteresis λ 0.5 1.0 - dB 1100 - 1600 nm SIGNAL DETECT Thresholds Wavelength of Operation Jitter Tolerance & Transfer Function dBm µs Compliant with ITU Recommendation G.958 1 Specified in average input optical power and measured at 125Mb/s, 155Mb/s, 622Mb/s, 1.25Gb/s and 2.488Gb/s with 223-1 PRBS.. Laser Safety: All transceivers 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 21737-0274, Rev. B 06-29-2005 DTR-2488-SM2-LC/LS-W-G-MR Transmitter Electrical Interface (over Operating Case Temperature, 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 - 0.30 V Differential Back Facet Monitor Voltage VFM+ - VFM- - 250 - mV Input Voltage Swing between DATA+ & DATA- Receiver Electrical Interface (over Operating Case Temperature, VCC = 3.13 to 3.47V) Parameter Symbol Minimum Typical Maximum Units 1,2 Output HIGH Voltage (LV-PECL) VOH VCC - 1.10 - VCC - 0.90 V Output LOW Voltage (LV-PECL)1,2 VOL VCC - 1.84 - VCC - 1.60 V Output Current IO - - 25 mA Output HIGH Voltage (LV-TTL) VOH 2.0 - VCC V Output LOW Voltage (LV-TTL) VOL 0 - 0.4 V VRPM - 0.80 - µΑ/µW Receiver Power Monitor Current 1 With 50Ω terminated to VCC - 2V (for DC-coupled modules). For AC-coupled modules, the output voltage swing into 50Ω load is 0.3V minimum and 0.8V maximum single-ended. 2 Electrical Power Supply Characteristics (over Operating Case Temperature, VCC = 3.13 to 3.47V) Parameter Symbol Minimum Typical Maximum Units VCC 3.13 3.3 3.47 V ICC - 195 310 mA Supply Voltage 1 Supply Current 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 BM+ 3kΩ 4 N/C 14 TD+ (TX DATA IN+) 5 N/C 15 TD- (TX DATA IN-) 6 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-) 10 RD+ ( RX DATA OUT+) 19 FM- (FACET MONITOR-) 20 FM+ (FACET MONITOR+) 10Ω Imon 3kΩ FM+ R 3kΩ 3kΩ BM- FMControl Circuit Bias Circuit GND LD Bias Monitor Circuit GND LD Back Facet Monitor Circuit R : 200Ω for SR & 1kΩ for IR 3 21737-0274, Rev. B 06-29-2005 DTR-2488-SM2-LC/LS-W-G-MR 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 21737-0274, Rev. B 06-29-2005 DTR-2488-SM2-LC/LS-W-G-MR 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” 21737-0274, Rev. B 06-29-2005 DTR-2488-SM2-LC/LS-W-G-MR 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 - T - Ln - DR - XX - Wp - G - MR - S1 Connector LC : w/o EMI Shield LS : w/ EMI Shield or w/ Extended S1 Shield Extended Shield “Blank” : None “S1” : Extended EMI Shield see Pin Length Option Table Temperature Range “Blank” : -5°C to +70°C “A” : -40°C to +85°C Light Output Option L1 : -10 to -3dBm (SR-1) L0 : -5 to 0dBm (IR-1 & IR-2) Receiver Coupling Option “Blank” : DC Coupling “AC” : AC Coupling Pin Length Option Table Options (p) Pin Length (x) Inches Millimeters Distance Option (see Note) SR : SR-1/I-16 (12/2km) IR1 : IR-1/S-16.1 (21/15km) IR2 : IR-2/S-16.2 (42/15km) Post Length (y) Inches Millimeters 3.17 + 0.250 - 0.125 "blank" 0.140 + 0.010 3.56 + 0.250 0.125 + 0.010 - 0.005 5 0.155 + 0.010 3.94 + 0.250 0.155 + 0.010 - 0.005 3.94 + 0.250 - 0.125 8 0.180 + 0.010 4.57 + 0.250 0.180 + 0.010 - 0.005 4.57 + 0.250 - 0.125 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 21737-0274, Rev. B 06-29-2005