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| Optoway LT-94B73B-P1G / LT-94B73B-P1-AG LT-94B73B-P1G 1 ***************************************************************************************************************************************************************************** (RoHS Compliant) 3.3V / 2.488 Gbps 1490 nm Continuous-Mode TX / 1.244 Gbps 1310 nm Burst-Mode RX with Burst-Mode Signal Detect, ITU-T G.984.2 G-PON CLASS B+ 2X5 SFF OLT Transceiver (with Reset-Less RX) **************************************************************************************************************************************************************************** l Class B+ Optical Line Terminal (OLT) for ITU-T G.984.2 Gigabit-capable PON l 2.488 Gbps / 1490 nm Continuous-Mode Transmitter l 1.244 Gbps / 1310 nm Burst-Mode Receiver with 2R Output l Resetless BM Receiver Design l BM RX with 32 Bits Packet-to-packet Guard Time for over 15dB Packet Optical Power Difference l 0 to 70oC Operating: LT-94B73B-P1G l -20 to 85oC Operating: LT-94B73B-P1-AG l 2x5 SFF Package with SC/PC Pigtail l Single +3.3 V Power Supply l RoHS Compliant l Transmitter: AC Coupling Input l Receiver: DC Coupling Output l LVTTL TX Shutdown Input l LVTTL High-Speed Burst-mode RX Signal Detect l Wave Solderable and Aqueous Washable l Class 1 Laser International Safety Standard IEC-60825 Compliant FEATURES DESCRIPTION LT-94B73B series is ITU-T G.984.2 Class B+ optical line terminal (OLT) for 2.488 Gbps/1490 nm in downstream and 1.244 Gbps/1310 nm in upstream. The transmitter section uses a multiple quantum well 1490 nm DFB laser and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an integrated 1310 nm burst-mode detector preamplifier (IDP) mounted in an optical header and a burst-mode limiting post-amplifier IC. Unlike the conventional BM RX, the RX does not requires reset pulse to receive optical data packets with different optical power. LVPECL interface is used for differential inputs and outputs. A LVTTL logic interface simplifies interface to external circuitry. LASER SAFETY This single mode transceiver is a Class 1 laser product. It complies with IEC-60825 and FDA 21 CFR 1040.10 and 1040.11. The transceiver must be operated within the specified temperature and voltage limits. The optical ports of the module shall be terminated with an optical connector or with a dust plug. APPLICATIONS l Broadband G-PON System ORDER INFORMATION P/No Class Type LT-94B73B-P1G LT-94B73B-P1-AG LT-94C73C-P1G B+ B+ C CNT CNT CNT Speed (Gb/s) 2.488 2.488 2.488 1490 DFB 1490 DFB 1490 DFB TX (nm) Power Type (dBm) RX Speed (nm) Sens. (Gb/s) 1310 1310 1310 (dBm) -8 / -28 0 / 70 -8 / -28 -20 / 85 -8 / -29 0 / 70 SFF 2X5 SFF 2X5 SFF 2X5 Yes Yes Yes Temp (oC) Package RoHS Compliant 1.5 / 5 BM, 2R 1.244 1.5 / 5 BM, 2R 1.244 7 / 3 BM, 2R 1.244 NOTE: 1. LT-XXXXXX-PWXG, SC/PC pigtail with fiber length 50 cm. 2. BM: Burst Mode; CNT: Continuous Mode; SFF: Small Form Factor Package. ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 Optoway Absolute Maximum Ratings Parameter Storage Temperature Operating Case Temperature Symbol Tstg Topr Min -40 0 -20 -0.5 Max 85 70 85 3.6 Units o C o C LT-94B73B-P1G Notes LT-94B73B-P1G LT-94B73B-P1-AG Air flow 1m/sec @>60 oC 2 ***************************************************************************************************************************************************************************** Power Supply Voltage Vcc V Recommended Operating Conditions Parameter Power Supply Voltage Operating Case Temperature Symbol Vcc Topr Min 3.13 0 -20 Max. 3.47 70 85 350 Unit V o C Units / Notes V LT-94B73B-P1G LT-94B73B-P1-AG Air flow 1m/sec @>60 oC Power Supply Current ICC (TX+RX) mA Transmitter Specifications ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V ) Parameter Symbol Min. Typ. Max. 5 1500 1 Units dBm nm nm dB dB Gb/s ps ps dB/Hz dB A A mV V V s Notes 1 -20 dB Width Optical Optical Transmit Power Po 1.5 Output Center Wavelength 1480 Output Spectrum Width SMSR Side Mode Suppression Ratio 30 Extinction Ratio ER 10 Data Rate Optical Rise Time Optical Fall Time Relative Intensity Noise RIN Downstream Optical Penalty Electrical Data Input Current - Low -350 Data Input Current - High Differential Input Voltage VIH - VIL 400 Shutdown Input Voltage -- Low VTSHDN,L 0 Shutdown Input Voltage -- High VTSHDN,H 2.0 Shut Off Time for Tx Shutdown tDIS 1. Output power is power coupled into a 9/125 m single mode fiber. 2.488 150 150 -120 0.5 20% to 80% Values 20% to 80% Values 350 2400 0.8 Vcc 30 Peak-to-Peak TX Output Disable TX Output Enable ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 Optoway Receiver Characteristics ( 0oC < Topr < 70oC, 3.13V < Vcc < 3.47V ) Parameter Symbol Min. Typ. Max. -28 1360 Units dBm dBm nm Gb/s Bits dB dB dBm dBm dB V V Bits V V ns ns Optical Sensitivity Sen Saturation Optical Power Sat -8 Wavelength of Operation 1260 Data Rate 1.244 Packet-to-Packet Guard Time 32 DC Optical Tolerance Sen +3 Optical Return Loss 20 Signal Detect -- Asserted Pa Signal Detect -- Deasserted Pd -40 Signal detect -- Hysteresis 2 Electrical Data Output Voltage - Low VOL Vcc - 1.935 Data Output Voltage - High VOH Vcc -1.135 Consecutive Identical Digit Immunity 72 Signal Detect Output Voltage -- Low VOL Signal Detect Output Voltage -- High VOH 2.0 Signal Detect Assert Time ASMAX 10 15 Signal Detect Deassert Time ANSMAX 80 100 Rest Between Packet 2. Sensitivity and saturation levels at BER 1E-10 for a 223-1 @ER=10. 3. At least 30 dB optical isolation for the wavelength 1480 to 1500 nm. 4. No reset is needed. 5. The optical power difference between neighboring packets is up to 15 dB. LT-94B73B-P1G Notes 2 2 3 4,5 3 ***************************************************************************************************************************************************************************** -28 Transition: low to high Transition: high to low Vcc - 1.56 Vcc - 0.76 0.5 30 150 Resetless Transition: low to high Transition: high to low CONNECTION DIAGRAM PIN 1 2 3 Signal Name RX Ground RX Vcc RX SD Description Receiver Ground. Connect this pin to ground plane. RX power supply input. Connect to 3.3 V power supply Signal Detect. High when single is present (LVTTL) Negative RX output, Differential LVPECL. DC coupled. Positive RX output, Differential LVPECL. DC Coupled. Mounting Studs. Connect to Chassis Ground PIN 10 9 8 Signal Name TDTD+ TxDis Description Negative transmitter data In. Internally terminated for LVPECL. AC coupled. Positive transmitter data In. Internally terminated for LVPECL. AC coupled. Transmitter Disable. TX is disabled when this pin is low. Internally pulled to "High".. Transmitter Ground. Directly connect this plan to ground plane TX power supply input. Connect to 3.3 V power supply 4 5 MS RX OUT (-) RX OUT (+) MS 7 6 TX Ground TX Vcc ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 Optoway PACKET-TO-PACKET SPACING LT-94B73B-P1G 4 ***************************************************************************************************************************************************************************** 1.244 Gbps, BER < 10 -10 tg=25 ns BM Receiver Output -13 dBm -28 dBm Hi-Lo Optical Input Figure 1. High-Low packet test at Hi/Lo ratio=15 dB ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 Optoway TIME CHARACTERISTICS OF SIGNAL DETECT LT-94B73B-P1G 5 ***************************************************************************************************************************************************************************** RX Output Signal Detect Figure 2. Timing characteristics of Signal Detect. Signal Detect: Low to High ~20 ns, High to Low ~100 ns (> 100 bit "0") RECOMMENDED CIRCUIT SCHEMATIC TX GND 7 8 TX Disable Vcc3.3V LD Driver 100R TX+ 9 Z=50R LVPECL TXTX Vcc 10 6 1uH 10nF 10uF 1uH Z=50R Vcc 3.3V RX Vcc 2 10nF 10uF Vcc 3.3V Vcc 3.3V 130R 130R TDLVPECL TD+ 82R 82R RXPost Amp 4 Z=50R RX+ 5 Z=50R 3 1 CDR or PHY DEVICE SD RX GND Signal Detect SFF OLT Module ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 Optoway PACKAGE DIAGRAM Units in mm LT-94B73B-P1G 6 ***************************************************************************************************************************************************************************** Note: Specifications subject to change without notice. The 50 +/- 3 cm long pigtail with a SC/PC connector is standard. If non-standard pigtail is required, please make a contact with Optoway Technology Inc. RECOMMENDED CIRCUIT BOARD LAYOUT Notes: 1. This figure describes the recommended circuit board layout for the SFF OLT Transceiver. 2. The hatched areas are keep-out areas reserved for housing standoff. No metal traces or ground connection in keep-out area. 3. The mounting studs should be solder to chassis ground for mechanical integrity. ***************************************************************************************************************************************************************************** OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303 Tel: 886-3-5979798 Fax: 886-3-5979737 E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 6/1/2006 V2.0 |
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