Multi-rate OC-12/STM-4 SFP Multimode Transceivers with Digital Diagnostics TRXA12MM Multi-Rate Product Description The TRXA12MM Multi-rate SFP fiber optic transceivers with integrated digital diagnostics monitoring functionality provide a quick and reliable interface for Fast Ethernet, OC-3/STM-1 and OC-12/STM-4 multimode applications. The diagnostic monitoring functions, alarm and warning features are provided via an I2C serial interface. The transceivers are designed to be compatible with the ATM requirements at OC-3/STM-1 (156Mb/s) and OC-12/STM-4 (622Mb/s) data rate, and is suitable for Fast Ethernet applications. The TRXA12MM Multi-rate transceivers connect to standard 20-pad SFP connectors for hot plug capability. This allows the system designer to make configuration changes or maintenance by simply plugging in different types of transceivers without removing the power supply from the host system. The transmitter design incorporates a highly reliable 1310nm LED and an integrated driver circuit. The receiver features a transimpedance amplifier IC for high sensitivity and wide dynamic range. The transmitter and receiver DATA interfaces are AC-coupled internally. LV-TTL Transmitter Disable control input and Loss of Signal output interfaces are also provided. The transceivers operate from a single +3.3V power supply over three operating case temperature ranges of -5°C to +70°C (“B” option), -5°C to +85°C (“E” option), or -40°C to +85°C (“A” option). The housing is made of plastic and metal for EMI enhancement. Features Lead Free Design & Fully RoHS Compliant Compatible with Fast Ethernet (125Mb/s) and ATM/ SONET Specifications for OC-3/STM-1 (156Mb/s) & OC-12/STM-4 (622Mb/s) Compatible with SFP MSA Digital Diagnostics Monitoring through Serial Interface Distances up to 500m Hot-pluggable Three Operating Case Temperature Options Loss of Signal Output TX Disable Input Duplex LC Optical Interface Single +3.3V Power Supply Absolute Maximum Ratings Parameter Storage Temperature Symbol Minimum Maximum Units TST - 40 + 85 °C -5 +70 -5 +85 "B" option Operating Case Temperature 1 "E" option TOP “A” option °C -40 +85 Supply Voltage VCC 0 +5.0 V Input Voltage VIN 0 VCC V - - NA - Lead Terminal Finish, Reflow Profile Limits and MSL 1 Measured on top side of SFP module at the front center vent hole of the cage. An Oplink Company Rev1.2008.07.10 TRXA12MM Multi-rate Transmitter Performance Characteristics (Over Operating Case Temperature. VCC = 3.13 to 3.47V) All parameters guaranteed only at typical data rate Parameter Symbol Minimum Typical Maximum Units B 125 - 622 Mb/s PO - 20.0 - - 14.0 dBm Operating Data Rate Optical Output Power 1 λC 1270 - 1380 nm ΔλRMS - 140 200 nm tr, tf - 1.0 1.25 ns Phi /Plo 10 - - dB POFF - - -45.0 dBm Systematic Jitter (DCD & DDJ, peak-to-peak) SJ - - 0.4 rs Random Jitter (peak-to-peak) RJ - - 0.15 rs Center Wavelength Spectral Width (RMS) Optical Rise and Fall Time (10% to 90%) Extinction Ratio Transmitter OFF Power 1 Measured average power coupled into 62.5/125μm, 0.275 NA graded-index multimode fiber. The minimum power specified is at Beginning-of-Life. (Over Operating Case Temperature. VCC = 3.13 to 3.47V) Receiver Performance Characteristics All parameters guaranteed only at typical data rate Parameter Operating Data Rate Receiver Sensitivity (10 -10 BER) 1 Maximum Input Optical Power (10 LOS Thresholds -10 BER) 1 Typical Maximum Units B 125 - 622 Mb/s Pmin -26.0 -28.0 - dBm Pmax -14.0 -6.0 - dBm Increasing Light Input Plos+ - - -26.0 Plos- -40.0 - - - 0.5 1.0 - Increasing Light Input t_loss_off - - 100 Decreasing Light Input t_loss_on - - 350 λ 1100 - 1600 Wavelength of Operation 1 Minimum Decreasing Light Input LOS Hysteresis LOS Timing Delay Symbol dBm dB μs nm Measured with 2 -1 PRBS at 125Mb/s for Fast Ethernet, and with 2 -1 PRBS at 156Mb/s & 622Mb/s for OC-3 & OC-12. 7 23 Laser Safety: All transceivers are Class I Laser products per FDA/CDRH and IEC-60825 standards. They must be operated under specified operating conditions. Oplink Communications, Inc. DATE OF MANUFACTURE: This product complies with 21 CFR 1040.10 and 1040.11 Meets Class I Laser Safety Requirements Oplink Communications, Inc. 2 Rev1.2008.07.10 TRXA12MM Multi-rate Transmitter Performance Characteristics Parameter (Over Operating Case Temperature. VCC = 3.13 to 3.47V) Symbol Minimum Typical Maximum Units Input Voltage Swing (TD+ & TD-) 1 VPP-DIF 0.25 - 2.4 V Input HIGH Voltage (TX Disable) 2 VIH 2.0 - VCC V Input LOW Voltage (TX Disable) VIL 0 - 0.8 V 1 2 2 Differential peak-to-peak voltage. There is an internal 4.7 to 10kΩ pull-up resistor to VccT. (Over Operating Case Temperature. VCC = 3.13 to 3.47V)) Receiver Electrical Interface Parameter Symbol Minimum Typical Maximum Units VPP-DIF 0.6 - 2.0 V Output HIGH Voltage (LOS) 2 VOH 2.0 - VCC + 0.3 V Output LOW Voltage (LOS)) 2 VOL 0 - 0.5 V Output Voltage Swing (RD+ & RD-) 1 1 2 Differential peak-to-peak voltage across external 100Ω load. Open collector compatible, 4.7 to 10kΩ pull-up resistor to Vcc (Host Supply Voltage). Electrical Power Supply Characteristics Parameter (Over Operating Case Temperature. VCC = 3.13 to 3.47V)) Symbol Minimum Typical Maximum Units Supply Voltage VCC 3.13 3.3 3.47 V Supply Current ICC - 210 285 mA Module Definition MOD_DEF(0) pin 6 MOD_DEF(1) pin 5 MOD_DEF(2) pin 4 Interpretation by Host TTL LOW SCL SDA Serial module definition protocol Electrical Pad Layout Host Board Connector Pad Layout 20 TX GND 1 TX GND 19 TD- (TX DATA IN-) 2 TX Fault 1 18 TD+ (TX DATA IN+) 3 TX Disable 2 17 TX GND 4 MOD_DEF(2) 3 16 VccTX 5 MOD_DEF(1) 4 15 VccRX 6 MOD_DEF(0) 14 RX GND 7 NO CONNECTION 6 13 RD+ (RX DATA OUT+) 8 LOS 7 12 RD- (RX DATA OUT-) 9 RX GND 8 11 RX GND 10 RX GND 9 Top of Board Pin 2 Internally Grounded Oplink Communications, Inc. Toward Bezel 5 10 Bottom of Board (as viewed thru top of board) 3 20 19 18 17 16 15 14 Toward ASIC 13 12 11 Rev1.2008.07.10 TRXA12MM Multi-rate Example of SFP host board schematic Vcc 3.3V 1μH coil or ferrite bead (<0.2 series resistance) Vcc 3.3V + 10 0.1 0.1 + 10 TX Disable 0.1 R 16 R TRXA12MM 8 15 Multi-rate 4 3 100 50 line TX DATA IN+ LOS MOD_DEF(2) 5 MOD_DEF(1) 6 MOD_DEF(0) (100Ω to ground internally) 18 13 19 12 50 line 50 line 50 line TX DATA IN- R RX DATA OUT+ to 50Ω load RX DATA OUTto 50Ω load 1, 9,10,11,14,17,20 R: 4.7 to 10kΩ Application Notes Electrical interface: All signal interfaces are compliant with the SFP MSA specification. The high speed DATA interface is differential AC-coupled internally and can be directly connected to a 3.3V SERDES IC. All low speed control and sense output signals are open collector TTL compatible and should be pulled up with a 4.7 - 10kΩ resistor on the host board negative edge clocks data from the SFP. Loss of Signal (LOS): The Loss of Signal circuit monitors the level of the incoming optical signal and generates a logic HIGH when an insufficient photocurrent is produced. The data transfer protocol and the details of the mandatoryand vendor specific data structures are defined in the SFP MSA, and SFF-8472, Rev. 9.4 The serial data signal (SDA) is for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The supported monitoring functions are RPM (receiver power monitor), internal temperature and module supply voltage. The device is internally calibrated. TX_Fault: Per SFP MSA, pin 2 is TX Fault. This transceiver is LED based and does not support TX Fault. Pin 2 is internally connected to transmitter circuit ground (TX GND) to indicate normal operation. 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 transceiver module as possible. TX_Disable: When the TX Disable pin is at logic HIGH, the transmitter optical output is disabled (less than -45dBm). Serial Identification and Monitoring: The module definition of SFP is indicated by the three module definition pins, MOD_DEF(0), MOD_DEF(1) and MOD_DEF(2). Upon power up, MOD_DEF(1:2) appear as NC (noconnection), and MOD_DEF(0) is TTL LOW. When the host system detects this condition, it activates the serial protocol (standard two-wire I2C serial interface) and generates the serial clock signal (SCL). The positive edge clocks data into the EEPROM segments of the SFP that are not write protected, and the Oplink Communications, Inc. 4 Rev1.2008.07.10 TRXA12MM Multi-rate 46335 Landing Parkway Fremont, CA 94538-6407 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: [email protected] Mechanical Package Dimensions in inches [mm] Default tolerances: .xxx = + .005”, .xx = + .01” Ordering Information Oplink can provide a remarkable range of customized optical solutions. For detail, please contact Oplink’s Sales and Marketing for your requirements and ordering information (510) 933-7200 or [email protected]. Oplink Communications, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Communications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Oplink Communications, 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 Oplink Communications, Inc. Rev1.2008.07.10 © 2006, Oplink Communications, Inc. 5