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产品名称:

HD-GP-OLT-20-C++

  • 产品详情
  • HD-GP-OLT-20-C++  

     

    GPON Class C++ SFP OLT Transceiver with Digital RSSI

     

    1 Features

     

    1.1 Single Fiber Transceiver with single mode SC receptacle 1490nm continuous-mode 2.488Gb/s DFB transmitter 1310nm burst-mode 1.244Gb/s APD receiver

     

    1.2 Complies with ITU-T G.984.2

     

    1.3 Digital Diagnostic Monitoring (DDM) with external calibrations

     

    1.4 LVPECL compatible data input /output

     

    1.5 LVTTL for Tx disable input and Tx_fault output

     

    1.6 LVTTL receiver Fast Burst Packet Detect indication

     

    1.7 Burst mode received signal strength indication (RSSI) function

     

    1.8 Complies with RoHS directive (2002/95/EC)

     

    2 Applications

     

    Gigabit Passive Optical Network (GPON) OLT

     

    3 General

     

    This is a high performance transceiver module for single fiber communications.It is designed to meet ITU G.984.2 requirements for optical line terminal (OLT) applications.

     

    The 1490nm DFB LD transmitter has automatic power control (APC) function and temperature compensation circuitry to ensure stable optical power and extinction ratio over all operating temperature range. The transmitter meets Class 1 eye safety per IEC60825 and CDRH standards.

     

    The receiver has a hermetically packaged APD-TIA (trans-impedance amplifier) pre-amplifier and a limiting amplifier with LVPECL compatible differential outputs. It features a Burst Packet Detect (SD) output which is LVTTL compatible. The SD output will come high after receiving the burst packet.

     

    The module provides digital diagnostic information of its operating conditions and status, including transmitting power, laser bias current, module temperature, and supply voltage.

     

    4 Performance Specifications

     

    4.1 Absolute Maximum Ratings

     

    Parameter



    Symbol


    Min.


    Max.


    Unit



    Storage Temperature



    Tst


    -40


    +85


    °C















    Operating relative humidity



    RH


    5


    90


    %



    (Non- condensing)































    Case Temperature (Operating)



    TC


    0


    70


    °C



    Input Voltage


    -


    GND


    Vcc


    V















    Power Supply Voltage



    Vcc


    0


    3.6


    V















    4.2 Recommended Operating Environment

     
























    Parameter




    Symbol



    Min.

    Typ.


    Max.

    Unit






    Power Supply Voltage





    Vcc



    +3.14

    +3.3

    +3.46


    V


























    Power Supply Current





    Icc



    -


    360

    500


    mA


























    Operating relative humidity





    RH



    5



    85


    %







    (Non- condensing)

























































    Case Temperature (Operating)





    TC



    0


    -

    70


    °C


























    I2C clock frequency








    -


    100

    400


    KHz


























    Power consumption Max




    -



    -


    -

    1.65


    W


























    4.3   1490nm Digital Transmitter E-O Characteristics




































    Parameter



    Symbol


    Min.



    Typ.


    Max.


    Unit


    Note





    Support data rate


    -




    2.488




    Gb/s

    -



























    Center Wavelength



    l


    1480


    1490


    1500


    nm




























    Spectral Width (-20dB)



    Dl


    -


    -


    1


    nm





























    Side Mode Suppression Ratio



    SMSR


    30







    dB

    4.3.1



























    Average Optical Output Power



    Po


    6


    -


    10


    dBm




























    Extinction Ratio



    Er


    8.2


    -


    -


    dB





























    Output Power with Transmitter



    Poff







    -39


    dBm








    Disabled
























































    Output Eye Diagram





    Compliant with ITU-T G.984.2 Mask
































    Differential Input Voltage



    VID


    600





    1600


    mV



























    Differential Input Impedance


    -


    80


    100


    120


    Ω








    Note 4.3.1: 2.488Gbps continuous-mode , PRBS223-1
















    4.4  1310 Burst-Mode Receiver Characteristics O-E Characteristics




























    Parameter


    Symbol


    Min.


    Typ.


    Max.

    Units


    Note



















    s
























    Support data rate







    1.244



    Gb/s




























    Wavelength of Operation


    -


    1290


    1310


    1330


    nm


    -




























    Receiver Sensitivity



    Sen.


    -


    -


    -30


    dBm


    4.4.1









































    Saturation Optical Power



    Sat


    -12


    -


    -


    dBm


    4.4.1




























    Data Output Voltage - High



    VOH


    VccR


    -


    VccR –


    V


    -










    -1.05



    0.85

















































    Data Output Voltage - Low



    VOL


    VccR


    -


    VccR –


    V


    -










    -1.84



    1.60















































     

    Note4.4.1: Measured with 1310nm, 1.244Gbps PRBS223-1, burst-mode optical input, ER=10dB, BER=1x10-10, Single burst packet length is 40us and packet interval is 40us.

     

     

     

     

     

     

     

     

    4.5 Digital Diagnostic Monitoring Characteristics

     



    Parameter



    Symbol


    Range



    Accuracy





    Transceiver Case



    T


    Measured transceiver case temperature over



    ±3°C





    Temperature




    specified operating range






































    Vcc

    Internally measured transceiver supply

    ±3%




    Supply Voltage

    voltage ,3.0~3.6V
















    TX Bias Current

    Id

    Measured TX Bias current in uA

    ±10%











    TX Output Power

    Po

    Measured TX Output Power in dBm Over the

    ±2dB




    specified output power range

















    Received Optical Power

    Pi

    Measured RX Received Power in dBm Over the

    ±3dB




    specified input power range, -10~-32dBm,

















    4.6 Timing Characteristics for Digital RSSI




    图片.png

    PARAMETER

    SYMBOL

    MIN

    TYP

    MAX

    UNITS







    ONU Optical Signal Length

    Tont

    350

    -

    -

    ns







    RSSI Trigger Delay

    Ttri

    0

    50

    -

    ns







    RSSI Trigger Signal Width

    Tw

    300

    350

    Tont- Ttri

    ns







    I2C read time

    Tp

    -

    -

    500

    us







     

    5 EEPROM Section

    图片.png

    6 Pin Definitions

     

    6.1 Pin Diagram


     图片.png

     

    6.2 Pin Descriptions

     


    Pin#


    Logic


    Name





    Function



    Notes




    1




    VeeT



    Transmitter Ground



    Note 7


















    2


    LVTTL


    TX_Fault



    Transmitter Fault Indication



    Note 1


















    3


    LVTTL


    TX_Disable



    Transmitter Disable



    Note 2




















    4




    SDA



    I

    2

    C Data



    Note 3













































    5




    SCL



    I

    2

    C Clock



    Note 3











































    6




    MOD-DEF(0)



    Internally grounded





















    7


    LVTTL


    Reset



    Receiver Reset



    Note 4


















    8


    LVTTL


    SD



    Burst Packet Detect



    Note 5


















    9




    RSSI_Trigger



    RSSI Trigger Signal from Host



    Note 6


















    10




    VeeR



    Receiver Ground



    Note7


















    11




    VeeR



    Receiver Ground



    Note 7


















    12




    RD-



    Inv. Received Data Out



    Note 8


















    13




    RD+



    Received Data Out



    Note 8


















    14




    VeeR



    Receiver Ground



    Note 7


















    15




    VccR



    Receiver Power



    Note 9


















    16




    VccT



    Transmitter Power



    Note 9


















    17




    VeeT



    Transmitter Ground



    Note 7


















    18




    TD+



    Transmit Data In



    Note 10


















    19




    TD-



    Inv. Transmit Data In



    Note 10


















    20




    VeeT



    Transmitter Ground



    Note 7



















     

    Notes:

     

    1. TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the hostboard to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 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 KΩ resistor. It’s states are:

     

    Low (0 – 0.8V): Transmitter on

     

    (>0.8, < 2.0V): Undefined

     

    High (2.0 – 3.465V): Transmitter Disabled

     

    Open: Transmitter Disabled .

     

    3. SDA and SCL is communication interface for I2C . They should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage should be Vcc.

     

    4. Reset is a LVTTL input which is used to clear receiver status before receiving the next burst packet.

     

    5. BPD is a LVTTL output. High level indicates that burst packet is detected by the receiver.

     

    6. RSSI_Trigger is a LVTTL input from host for starting ADC of digital RSSI circuit to sample the analog RSSI signal.

     

    7. Vee is connected inside the SFP OLT transceiver.

     

    8. RD- and RD+ are LVPECL differential outputs of the receiver, and externally DC-coupled to 100Ω differential lines at the user host board.

    9. Vcc is the receiver and transmitter power supply, respectively. They are defined as 3.3V ±5% at the SFP connector pin. Maximum suppl in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. Vcc is internally connected inside the SFP OLT transceiver.

     

    10. TD- and TD+ are the differential transmitter inputs. They are AC coupled differential lines with 100 Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board.

     

    7 Outline Dimensions

    图片.png

    Recommended Circuit





    VCCT




    VCC





    TX_Disable(3)

    4.7K~10K



    TX_Fault(2)

    4.7K~10K













    VCC



    Laser


    TD+(18)


    Z=50



    1uH








    VccR(15)

    100









    Driver

    TD-(19)










    Z=50














    10uF

    0.1uF






    VCC


















    RD-(12)

    130











    Z=50






    Limited












    RD+(13)








    Amplifier




    Z=50















    Reset (7)





    82



















    BPD(8)








    MCU



    SCL(5)





    VCC

    1uH

    VccT(16)



    SDA(4)































    4.7K~10K




    10uF

    0.1uF






    VCC









    RSSI-Trigger(9)







    OLT SFP
















    9

    Ordering Information









    Part Number


    Operating Case Temperature


    RoHS Compliant



    HD-GP-OLT-20-C++


    0 ~ 70 °C





    RoHS-6


    10

    Document History








    Version


    Change Description



    Changed by

    Date


    VER A

    Initial Release




    Mr.Wang

    05/16/2017



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