PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver PART NUMBER: SFPT-LX2-01 PRODUCT FEATURES Up to 1.25Gb/s data links FP laser transmitter and PIN photo-detector Up to 20km on 9/125m SMF Hot-pluggable SFP footprint Duplex LC/UPC type pluggable optical interface Low power dissipation Metal enclosure, for lower EMI RoHS compliant and lead-free Support Digital Diagnostic Monitoring interface Single +3.3V power supply Compliant with SFF-8472 Case operating temperature Commercial: 0C to +70C APPLICATIONS Switch to Switch Interface Gigabit Ethernet Switched Backplane Applications PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 1 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver Router/Server Interface Other Optical Links PRODUCT DESCRIPTION SFPT-LX2-01 Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser and the PIN photo-detector .The module data link up to 20KM in 9/125um single mode fiber. The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. The system can also get the LOS (or Link)/Disable/Fault information via I2C register access. Ordering information Data Product part Rate Wavelength Transmission Temperature Range (nm) Distance(km) Tcase 1310 20 Media Number (Mbps) SFPT-LX2-01 1250 Single mode fiber PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ 0~70 commercial SHEET NO 2 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver I. Pin Descriptions Pin Symbol 1 VEET 2 TFAULT 3 TDIS 4 Name/Description Transmitter Ground NOTE (Common with Receiver Ground) 1 Transmitter Fault. Transmitter Disable. Laser output disabled on high or open. 2 MOD_DEF(2) Module Definition 2. Data line for Serial ID. 3 5 MOD_DEF(1) Module Definition 1. Clock line for Serial ID. 3 6 MOD_DEF(0) Module Definition 0. Grounded within the module. 3 7 Rate Select No connection required 4 8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 5 9 VEER Receiver Ground (Common with Transmitter Ground) 1 10 VEER Receiver Ground (Common with Transmitter Ground) 1 11 VEER Receiver Ground (Common with Transmitter Ground) 1 12 RD- Receiver Inverted DATA out. AC Coupled 13 RD+ Receiver Non-inverted DATA out. 14 VEER Receiver Ground 15 VCCR Receiver Power Supply 16 VCCT Transmitter Power Supply 17 VEET Transmitter Ground 18 TD+ Transmitter Non-Inverted DATA in. AC Coupled. 19 TD- Transmitter Inverted DATA in. AC Coupled. 20 VEET Transmitter Ground AC Coupled (Common with Transmitter Ground) (Common with Receiver Ground) 1 (Common with Receiver Ground) PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ 1 1 SHEET NO 3 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver Notes: 1. Circuit ground is internally isolated from chassis ground. 2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V. 3. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V.MOD_DEF (0) pulls line low to indicate module is plugged in. 4. This is an optional input used to control the receiver bandwidth for compatibility with multiple data rates (most likely Fiber Channel 1x and 2x Rates).If implemented, the input will be internally pulled down with > 30k resistor. The input states are: Low (0 - 0.8V): Reduced Bandwidth (>0.8, < 2.0V): Undefined High (2.0 - 3.465V): Full Bandwidth Open: Reduced Bandwidth 5. LOS is open collector output should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. Figure2. Pin out of Connector Block on Host Board PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 4 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver II. Absolute Maximum Ratings Parameter Symbol Min. Storage Temperature Ts Storage Ambient Humidity Power Supply Voltage Typ. Max. Unit -40 85 C HA 5 95 % VCC -0.5 4 V Signal Input Voltage -0.3 Vcc+0.3 V Receiver Damage Threshold +5 Note dBm III. Recommended Operating Conditions Parameter Symbol Min. Max. Unit Tcase 0 70 C SFPT-LX2-01 Ambient Humidity HA 5 70 % Non-condensing Power Supply Voltage VCC 3.13 3.47 V Power Supply Current ICC 280 mA 100 mVp-p 100Hz to 1MHz Mbps TX Rate/RX Rate Case Operating Temperature Typ. 3.3 Power Supply Noise Rejection Data Rate 1250/1250 Transmission Distance 20 Coupled Fiber IV. Note KM Single mode fiber 9/125um SMF Specification of Transmitter Parameter Average Output Power Symbol Min. POUT -9 ER 9 Extinction Ratio Typ. Max. Unit Note -3 dBm Note (1) dB PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 5 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver Center Wavelength C Spectrum Bandwidth(RMS) 1270 1310 1360 nm nm 3.5 Transmitter OFF Output Power POff -45 dBm Differential Line Input Impedance RIN 110 Ohm Output Eye Mask 90 Compliant with 100 FP Laser IEEE802.3 z (class 1 laser Note (2) safety) Note (1): Measure at 2^7-1 NRZ PRBS pattern. Note (2): Transmitter eye mask definition. V. Specification of Receiver Parameter Symbol Min. Input Optical Wavelength IN 1270 Receiver Sensitivity PIN Input Saturation Power (Overload) PSAT Max. Unit Note 1610 nm PIN-TIA -20 dBm Note (1) -3 Los Of Signal Assert PA Los Of Signal De-assert PD -38 PA-PD 0.5 LOS Hysteresis Typ. dBm -21 dBm dBm 2 6 Note (2) dB Note (1): Measured with Light source 1310nm, ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ. PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 6 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver Note (2): When LOS de-asserted, the RX data+/- output is High-level (fixed) VI. Electrical Interface Characteristics Parameter Symbol Min. Typ. Max. Unit Note A mA Note (1) Vcc+0.3 V Transmitter Total Supply Current ICC Transmitter Disable Input-High VDISH 2 Transmitter Disable Input-Low VDISL 0 0.8 V Transmitter Fault Input-High VDISL 2 Vcc+0.3 V Transmitter Fault Input-Low VTxFH 0 0.8 V B mA Receiver Total Supply Current ICC LOSS Output Voltage-High VLOSH 2 Vcc+0.3 V LOSS Output Voltage-Low VLOSL 0 0.8 V Note (1): A (TX) + B (RX) = 280mA VII. Note (1) LVTTL (Not include termination circuit) Digital Diagnostic Functions SFPT-LX2-01 transceivers support the 2-wire serial communication protocol as defined in the SFP MSA. It is very closely related to the E2PROM defined in the GBIC standard, with the same electrical specifications. The standard SFP serial ID provides access to identification information that describes the transceiver's capabilities, standard interfaces, manufacturer, and other information. Additionally, SFP transceivers provide a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage .It also defines a sophisticated system of alarm and warning flags, which alerts end-users when particular operating parameters are outside of a factory set normal range. The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a 2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8 bit address 1010001X (A2h), so the originally defined serial ID memory map remains unchanged. The interface is identical PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 7 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver to, and is thus fully backward compatible with both the GBIC Specification and the SFP Multi Source Agreement. The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL, Mod Def 1) is generated by the host. The positive edge clocks data into the SFP transceiver into those segments of the E2PROM that are not write-protected. The negative edge clocks data from the SFP transceiver. The serial data signal (SDA, Mod Def 2) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially. Digital diagnostics for the SFPT-LX2-01 are internally calibrated by default. PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 8 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver VIII. Recommend Circuit Schematic 3.3V VCC 1uH SFP Module Protocol Vcc VccT 1uH 10uF RES1 0.1uF 10uF Tx_Disable 0.1uF 10K Tx_Disable Tx_Fault Tx_Fault 0.1uF TD+ 100 Ohm Laser Driver TD- Laser Diode VeeT 0.1uF VccR SerDes IC RES1 10uF 0.1uF Protocol IC RD+ 0.1uF Amplifier 100 Ohm RD- Rx_LOS Photo Diode 0.1uF Rx_LOS VeeR 3.3V RES1 RES1 RES1 Mod_def 2 EEPROM Mod_def 1 PLD/PAL Mod_def 0 RES1=4.7K to10K Ohms * Depands onSerDes IC used PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 9 OF 10 PRODUCT DATASHEET 1.25Gb/s 1310nm Single-mode SFP Transceiver 0.1 0.1 IX. Mechanical Specifications (Unit: mm SFPT-LX2-01 X. Regulatory Compliance Feature Reference Performance Electrostatic dischargeESD IEC/EN 61000-4-2 Compatible with standards Electromagnetic Interference (EMI) Laser Eye Safety FCC Part 15 Class B EN 55022 Class B (CISPR 22A) FDA 21CFR 1040.10, 1040.11 IEC/EN 60825-12 Compatible with standards Class 1 laser product Component Recognition IEC/EN 60950 UL Compatible with standards ROHS 2002/95/EC Compatible with standards EMC EN61000-3 Compatible with standards PART NUMBER DFTO DATE REVISION SFPT-LX2-01 ELLA 15, Sep., 2014 P1 http://www.pulseelectronics.com/ SHEET NO 10 OF 10