10G SFP BIDI 80km transceivers SFP-10G-LX-SM1490/1550 series single mode is small form factor pluggable module for optical data communications such as 10G Ethernet. It is with the SFP+ 20-pin connector to allow hot plug capability. 10G SFP BIDI 80km transceivers module is designed for single mode fiber and operates at a nominal wavelength of 1490nm or 1550nm; The transmitter section uses a EML laser, which is class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section consists of a APD photodiode integrated with a TIA. The transceiver designs are optimized for high perform -ance and cost effective to supply customers the best solutions for telecommunication.
10G SFP BIDI 80km Product Features
Supports 9.95 to 11.3Gb/s bit rates
Simplex LC Connector
Hot pluggable SFP+ footprint
Cooled 1490nm EML transmitter, 1550nm APD receiver
Cooled 1550nm EML transmitter, 1490nm APD receiver
Applicable for 80km SMF connection
Low power consumption, < 1.5W
Digital Diagnostic Monitor Interface
Optical interface compliant to IEEE 802.3ae 10GBASE-ZR
Electrical interface compliant to SFF-8431
Operating case temperature: Commerical:0 to 70 °C
10G SFP BIDI 80km Applications
Other optical link
Absolute Maximum Ratings
Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.
General Operating Characteristics
|Operating Case Temp.||Tc||0||70||°C|
Electrical Characteristics (TOP(C) = 0 to 70 ℃, VCC = 3.13 to 3.47 V)
|Differential data input swing||VIN,PP||120||850||mVpp||1|
|Transmit Disable Voltage||VD||VCC-0.8||Vcc||V|
|Transmit Enable Voltage||VEN||Vee||Vee+0.8|
|Input differential impedance||Rin||100||Ω|
|Differential data output swing||Vout,pp||300||850||mVpp||2|
|Output rise time and fall time||Tr, Tf||28||Ps||3|
- Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
- Into 100Ω differential termination.
- 20 – 80%. Measured with Module Compliance Test Board and OMA test pattern. Use of four 1’s and four 0’s sequence in the PRBS 9 is an acceptable alternative.
- LOS is an open collector output. Should be pulled up with 4.7kΩ – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1.
Optical Characteristics (TOP(C) = 0 to 70 ℃, TOP(I) =-40 to 80 ℃,VCC = 3.13 to 3.47 V)
|Ave. output power (Enabled)||PAVE||0||5||dBm||1|
|Side-Mode Suppression Ratio||SMSR||30||dB|
|RMS spectral width||Δλ||1||nm|
|Rise/Fall time (20%~80%)||Tr/Tf||50||ps|
|Relative Intensity Noise||RIN||-128||dB/Hz|
|Output Optical Eye||Compliant with IEEE 0802.3ae|
|Sensitivity over 80Km fiber||PSEN2||-20||dBm||2|
- Average power figures are informative only, per IEEE 802.3ae.
- Measured with worst ER=9; BER<10-12; 231 – 1 PRBS.
Pin Defintion And Functions
|1||VEET ||Transmitter Ground|
|2||Tx_FAULT ||Transmitter Fault|
|3||Tx_DIS ||Transmitter Disable. Laser output disabled on high or open|
|4||SDA ||2-wire Serial Interface Data Line|
|5||SCL ||2-wire Serial Interface Clock Line|
|6||MOD_ABS ||Module Absent. Grounded within the module|
|7||RS0||Rate Select 0|
|8||RX_LOS ||Loss of Signal indication. Logic 0 indicates normal operation|
|9||RS1 ||Rate Select 1|
|10||VEER ||Receiver Ground|
|11||VEER ||Receiver Ground|
|12||RD-||Receiver Inverted DATA out. AC Coupled|
|13||RD+||Receiver DATA out. AC Coupled|
|14||VEER ||Receiver Ground|
|15||VCCR||Receiver Power Supply|
|16||VCCT||Transmitter Power Supply|
|17||VEET ||Transmitter Ground|
|18||TD+||Transmitter DATA in. AC Coupled|
|19||TD-||Transmitter Inverted DATA in. AC Coupled|
|20||VEET ||Transmitter Ground|
1.Module circuit ground is isolated from module chassis ground within the module.
2.should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.
3.Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
4.Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to Vcc_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module is physically absent from a host slot.
Serial Interface for ID and DDM
The SFP-10G-LX-SM1490/1550 transceiver support the 2-wire serial communication protocol as defined in the SFP+ MSA. The standard SFP+ serial ID provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information. Additionally, This SFP+ transceivers provide an 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 EEPROM that is accessible over a 2-wire serial interface at the 8 bit address 1010000X(A0h), so the originally monitoring interface makes use of the 8 bit address(A2h), so the originally defined serial ID memory map remains unchanged. The structure of the memory map is shown in Table1.
Table 1. Digital Diagnostic Memory Map (Specific Data Field Descriptions)
Digital Diagnostic Specifications
The SFP-10G-LX-SM1490/1550 transceivers can be used in host systems that require either internally or externally calibrated digital diagnostics.
|Transceiver supply voltage||DVoltage||V||2.8||4.0||±3%|
|Transmitter bias current||DBias||mA||0||127||±10%||2|
|Transmitter output power||DTx-Power||dBm||-1||+6||±2dB|
|Receiver average input power||DRx-Power||dBm||-30||-6||±2dB|
- Internally measured
- The accuracy of the Tx bias current is 10% of the actual current from the laser driver to the laser