SFP Tranceiver / Multimode SFP Transceiver
OP-SFP-300 series multi-mode transceivers is SFPmodule for bi-directional serial optical data communications such as10GBASE-SR and 10GBASE-SW.
It is with the SFP20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. This module is designed for multi-mode fiber and operates at a nominal wavelength of 850 nm.
The transmitter section uses a Vertical Cavity Surface Emitted Laser (VCSEL) and is a Class1 laser compliant according to International Safety Standard IEC 60825. The receiver section uses an integrated GaAs detector preamplifier (IDP) mounted in an optical header and a limiting post-amplifier IC..
  • Features
     Operating data rate up to 10.3Gbps
     850 nm VCSEL Transmitter
     Distance up to 300m
     Single 3.3V Power supply and TTL Logic Interface
     Duplex LC Connector Interface
     Hot Pluggable
     Operating Case Temperature Standard: 0°C~+70°C
     Compliant with MSA SFPSpecification
     Digital diagnostic monitor interface
  • Applications
     10G Ethernet at 10.3125Gbps
     Compatible with SFF-8472
  • Regulatory Compliance
    Feature Standard Performance

    Electrostatic Discharge
    (ESD) to the Electrical Pins

    		 MIL-STD-883E Method 3015.7 Class1(>500 V) Isolation with the
    case

    Electromagnetic Interference
    (EMI)

    		 FCC Part 15 ClassB Compatible with standards
    Laser Eye Safety FDA 21CFR 1040.10 and
    1040.11 EN60950, EN (IEC) 60825-1,2    		 Compatible with Class I laser
    product. Compatible with TüV standards
    Component Recognition UL and CUL Compatible with UL standards
    Green Products RoHS RoHS6
  • Absolute Maximum Ratings
    Parameter Symbol Min. Max. Unit
    Storage Temperature TS -40 +85 °C
    Supply Voltage VCC -0.5 3.6 V
  • Recommended Operating Conditions
    Parameter Symbol Min. Typical Max. Unit
    Operating Case
    Temperature
    TA OP-SFP -LP-10
    		0   + 70 °C
    Power Supply
    Voltage    		 VCC 3.15 3.3 3.45 V
    Power Supply
    Current    		 ICC     300 mA
    Surge Current ISurge     +30 mA
    Baud Rate     10.3125 10.5 GBaud
  • Performance Specifications - Electrical
    TRANSMITTER
    Parameter Symbol Min. Typical Max. Unit notes
    CML
    Inputs(Differential)    		 Vin 150   1200 mVp AC coupled inputs
    Input Impedance
    (Differential)     		Zin 85 100 115 ohms Rin> 100 kohms @ DC
    Tx_DISABLE Input
    Voltage - High     		  2   3.45 V  
    Tx_DISABLE Input
    Voltage - Low     		  0   0.8 V  
    Tx_FAULT Output
    Voltage -- High    		   2   Vcc+0.3 V Io = 400µA;
    Host Vcc
    Tx_FAULT Output
    Voltage -- Low     		  0   0.5 V Io = -4.0mA
    RECEIVER
    CML Outputs
    (Differential)    		 Vout 350   700 mVpp AC coupled
    outputs
    Output Impedance
    (Differential)    		 Zout 85 100 115 ohms  
    Rx_LOS Output Voltage - High 2     Vcc+0.3 V lo = 400µA;
    Host Vcc
    Rx_LOS Output Voltage - Low   0   0.8 V lo = -4.0mA
    MOD_DEF ( 0:2 )
    VoH
    VoL
    2.5
    0
    		 
    V
    0.5 V
    		  With Serial ID
  • Optical and Electrical Characteristics
    Parameter  Symbol  Min.  Typical  Max. Unit 
    50/125 mm MMF     300   m
    Data Rate     10.3   Gbps
    Transmitter  
               
    Centre Wavelength  c 840 850 860 nm
    Spectral Width (RMS)      0.45 nm
    Average Output Power  P0ut -7.3   -1.5 dBm
    Transmitter Dispersion Penalty  TDP     3.9 dB
    Input Differential Impedance  ZIN 90 100 110
    TX Disable
    Disable
    Enable
    		 
    0.2
    0
    		 
    Vcc+0.3
    0.8
    		V
    TX_Fault
    Fault
    Normal
    		 
    0.2
    0
    		 
    Vcc+0.3
    0.8
    		V
    TX_Disable Assert Time t_off     10 us
    RECEIVER
    Centre Wavelength   c 840 850 860 nm
    Receiver Sensitivity   PIN     -9.9 dBm
    Output Differential Impedance PIN 90 100 110
    Receiver Overload PMAX -1     dBm
    Optical Return Loss ORL     -12 dB
    LOS De-Assert LOSD     -11 dBm
    LOS Assert LOSA -25     dBm
    LOS
    High
    Low
     
     
    2.0
    0
     
     
    Vcc+0.3
    0.8
    		V
  • SFP Transceiver Electrical Pad Layout

    Pin Function Definitions

    Pin No.   Name   FUNCTION   Plug Seq.  Notes  
    1 VeeT Transmitter  Ground 1  
    2 TX Fault Transmitter Fault Indication 3 Note 1
    3 TX Disable Transmitter  Disable 3 Note 2, Module disables on high or open  
    4 SDA Module Definition 2 3 Note 3, Data line for Serial ID.
    5 SCL Module Definition  1 3 Note 3, Clock line for Serial ID.
    6 MOD-ABS Module Definition  0 3 Note 3
    7 RS0 RX Rate Select (LVTTL). 3 This pin has an internal 30k pull down to ground. A signal on this pin will not affect module performance.
    8 LOS Loss of Signal 3 Note 4
    9 RS1 TX Rate Select (LVTTL). 1 This pin has an internal 30k pull down to ground. A signal on this pin will not affect module performance.
    10 VeeR Receiver Ground   1 Note 5
    11 VeeR Receiver Ground 1 Note 5
    12 RD- Inv. Received
    Data Out     		3 Note 6
    13 RD+ Received Data
    Out     		3 Note 7
    14 VeeR Receiver Ground 1 Note 5
    15 VccR Receiver Power 2 3.3±5%, Note 7
    16 VccT Transmitter Power  2 3.3±5%, Note 7
    17 VeeT Transmitter
    Ground     		1 Note 5
    18 TD+ Transmit Data In 3 Note 8
    19 TD- Inv. Transmit Data
    In     		3 Note 8
    20 VeeT Transmitter
    Ground     		1 Note 5
    Notes :
    1

    TX Fault is an open collector/drain output, which should be pulled up with a 4.7K -10K resistor on the host board. Pull up voltage between 2.0V and VccT, R+0.3V. When high, output indicates a laser fault of some kind. Low indicates normal operation.

    In the low state, the output will be pulled to < 0.8V.
    2 TX disable is an input that is used to shut down the transmitter optical output. It is
    pulled up within the module with a 4.7 - 10 K resistor. Its states are:
    Low (0 - 0.8V): Transmitter on
    (>0.8, < 2.0V): Undefined
    High (2.0 - 3.465V): Transmitter Disabled
    Open: Transmitter Disabled
    3 Modulation Absent, connected to VEET or VEER in the module.
    4 LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K - 10K resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to < 0.8V.
    5 VeeR and VeeT may be internally connected within the SFPmodule.
    6 RD-/+: These are the differential receiver outputs. They are AC coupled 100 differential lines which should be terminated with 100 (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 370 and 2000 mV differential (185 -1000 mV single ended) when properly terminated.
    7 VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1 ohm should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supply-filtering network is used, hot plugging of the SFPtransceiver module will result in an inrush current of no more than 30mA greater than the steady state value. VccR and VccT may be internally connected within the SFP transceiver module.
    8 TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100 differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 500 - 2400 mV (250 - 1200mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 - 600mV single-ended) be used for best EMI performance.
  • EEPROM Informations

    The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL AT24C02/04 family of components. When the serial protocol is activated, the host generates the serial clock signal (SCL). The positive edge clocks data into those segments of the EEPROM that are not write protected within the SFP transceiver. The negative edge clocks data from the SFPtransceiver. The serial data signal (SDA) 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.

    The Module provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are implemented. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 - 95 at wire serial bus address A2h. The digital diagnostic memory map specific data field define as following .For detail EEPROM information, please refer to the related document of SFF 8472 Rev 10.2 .

    Recommend Circuit Schematic

    Mechanical Specifications

  • Ordering information
    Part No. Data Rate Laser Fibre Type Distance Optical
    Interface    		 DDMI
    OP-SFP -300 10.3Gbps 850nm
    VCSEL    		 MMF 300m LC YES
  • Notice

    Optiplus Networks reserves the right to make changes to or discontinue any optical link product or service identified in this publication, without notice, in order to improve design and/or performance. Applications that are described herein for any of the optical link products are for illustrative purposes only. Optiplus networks makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

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