10G SFP BIDI 80km

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
10.3125Gbps Ethernet
Other optical link

Absolute Maximum Ratings

Parameter Symbol Min. Max. Unit Note
Supply Voltage Vcc -0.5 4.0 V
Storage Temperature TS -40 85 °C
Relative Humidity RH 0 85 %

Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.

General Operating Characteristics

Parameter Symbol Min. Typ Max. Unit Note
Data Rate DR 9.95 10.3125 11.3 Gb/s
Supply Voltage Vcc 3.13 3.3 3.47 V
Supply Current Icc5 450 mA
Operating Case Temp. Tc 0 70 °C

Electrical Characteristics (TOP(C) = 0 to 70 ℃, VCC = 3.13 to 3.47 V)

Parameter Symbol Min. Typ Max. Unit Note
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
LOS asserted VLOS_F VCC-0.8 Vcc V 4
LOS de-asserted VLOS_N Vee Vee+0.8 V 4



  1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
  2. Into 100Ω differential termination.
  3. 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.
  4. 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)

Parameter Symbol Min. Typ Max. Unit Note
Operating Wavelength λ 1470 1490 1510 nm
1530 1550 1565
Ave. output power (Enabled) PAVE 0 5 dBm 1
Side-Mode Suppression Ratio SMSR 30 dB
Extinction Ratio ER 9 dB
RMS spectral width Δλ 1 nm
Rise/Fall time (20%~80%) Tr/Tf 50 ps
Dispersion penalty TDP 3.2 dB
Relative Intensity Noise RIN -128 dB/Hz
Output Optical Eye Compliant with IEEE 0802.3ae
Operating Wavelength λ 1530 1550 1565 nm
1470 1490 1510
Receiver Sensitivity PSEN1 -22 dBm 2
Sensitivity over 80Km fiber PSEN2 -20 dBm 2
Overload PAVE -7 dBm
LOS Assert Pa -35 dBm
LOS De-assert Pd -24 dBm
LOS Hysteresis Pd-Pa 0.5 dB


  1. Average power figures are informative only, per IEEE 802.3ae.
  2. Measured with worst ER=9; BER<10-12; 231 – 1 PRBS.

Pin Defintion And Functions

Pin Symbol Name/Description
1 VEET [1] Transmitter Ground
2 Tx_FAULT [2] Transmitter Fault
3 Tx_DIS [3] Transmitter Disable. Laser output disabled on high or open
4 SDA [2] 2-wire Serial Interface Data Line
5 SCL [2] 2-wire Serial Interface Clock Line
6 MOD_ABS [4] Module Absent. Grounded within the module
7 RS0 Rate Select 0
8 RX_LOS [2] Loss of Signal indication. Logic 0 indicates normal operation
9 RS1 [5] Rate Select 1
10 VEER [1] Receiver Ground
11 VEER [1] Receiver Ground
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver DATA out. AC Coupled
14 VEER [1] Receiver Ground
15 VCCR Receiver Power Supply
16 VCCT Transmitter Power Supply
17 VEET [1] Transmitter Ground
18 TD+ Transmitter DATA in. AC Coupled
19 TD- Transmitter Inverted DATA in. AC Coupled
20 VEET [1] 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.

Parameter Symbol Units Min. Max. Accuracy Note
Transceiver temperature DTemp-E ºC -5 +75 ±5ºC 1
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



  1. Internally measured
  2. The accuracy of the Tx bias current is 10% of the actual current from the laser driver to the laser