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25Gbps 10km Duplex LC SFP28 Transceiver

Optical Module

25Gbps 10km Duplex LC SFP28 Transceiver

Description

The SFP28 transceivers are designed for use in 25-Gigabit Ethernet links up to 10km over Single Mode Fiber.

The transceivers are compatible with INF-8431 and SFF-8472. For further information, please refer to INF-8431 and SFF-8472.

    description2

    Specification parameter

    Name

    25G single mode

    Model number

    ZHLP-1325G-10-R

    Brand

    Zhilian Hengtong

    Package type

    SFP28

    Transmission rate

    25G

    Wave length

    1310nm

    Transmission distance

    10km

    Port

    LC

    Fiber type

    9/125µm SMF

    Laser type

    DFB

    Receiver type

    PIN

    Transmitted optical power

     -5~+2dBm

    Receiving sensitivity

     -11.4dbm

    Power

    <1.32w

    Receive overload

     2dBm

    Power dissipation

     

    Extinction ratio

    ≥3DB

    CDR (Clock Data Recovery)

    support

    FEC function

     

    Commercial temperature

    0~70℃

    Agreement

    INF-8431/SFF-

    8472/IEEE802.3cc

    Module Block Diagram

    pp1ywf

    Features

    * Supports 24.3Gbps to 28.1Gbps bit rates 
    * 1310nm DFB Laser and PIN photo-detector
    * Up to 10km on 9/125µm SMF
    * Duplex LC receptacle optical interface compliant
    * Hot pluggable                      
    * All-metal housing for superior EMI performance
    * RoHS6 compliant (lead free)
    * Operating case temperature:
    Commercial: -5ºC to +70°C

    Applications

    * 25G Ethernet  
    * 25G Fibre Channel 

    Standards

    * Compliant with INF-8431
    * Compliant with SFF-8472
    * Compatible with IEEE802.3cc

    Recommended Operating Environment

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Power Supply Voltage

    VCC

    3.13

    3.3

    3.46

    V

    Power Supply Current

    ICC

     

     

    400

    mA

    Operating Case Temperature

    Commercial

    TC

    -5

     

    +70

    °C

    Extended

    -20

     

    +80

    Industrial

    -40

     

    +85

    Data Rate

     

     

    25.78

     

    Gbps

    Electrical Characteristics

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Note

    Transmitter Section

     

    Input Differential Impedance

    Rin

    90

    100

    110

    Ω

     

    Differential Data Input Swing

    Vin PP

    200

     

    900

    mV

    1

    Transmit Disable Voltage

    VD

    Vcc – 1.3

     

    Vcc

    V

     

    Transmit Enable Voltage

    VEN

    Vee

     

    Vee+ 0.8

    V

     

    Receiver Section

     

    Differential Data Output Swing

    Vout PP

    400

     

    900

    mV

     

    LOS Fault

    Vlos fault

    Vcc – 0.5

     

    Vcc_host

    V

    2

    LOS Normal

    Vlos norm

    Vee

     

    Vee+0.5

    V

    2


    Notes:
    1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
    2. 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 Parameters

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Note

    Transmitter Section

    Centre Wavelength

    λc

    1295

    1310

    1325

    nm

     

    Spectral Width(-20dB)

    Δλ

     

     

    1

    nm

     

    Side Mode Suppression Ratio

    SMSR

    30

     

     

    dB

     

    Average Optical Power (avg.)

    Pout

    -5

     

    +2.0

    dBm

    1

    Laser Off Power

    Poff

    -

    -

    -30

    dBm

     

    Extinction Ratio

    ER

    3

    -

    -

    dB

    2

    Relative Intensity Noise

    RIN

    -

    -

    -130

    dB/Hz

     

    Transmitter and Dispersion

    Penalty

    TDP

     

    -

    2.7

    dB

     

    Optical Return Loss Tolerance

     

    -

    -

    26

    dB

     

    Output Optical Eye

    Compliant with IEEE802.3cc eye masks when filtered

    2

    Receiver Section

     

    Receiver Center Wavelength

    λc

    1260

    1310

    1355

    nm

     

    Receiver in Average Power

     

    -11.4

     

    2

    dBm

     

    Receiver sensitivity(OMA)

    Sen

     

     

    -12

    dBm

    3

    Los Assert

    LOSA

    -26

    -

    -

    dBm

     

    Los Dessert

    LOSD

    -

    -

    -17

    dBm

     

    Los Hysteresis

    LOSH

    0.5

    -

    5

    dB

     

    Overload

    Pin-max

    -

    -

    2

    dBm

    3

    Receiver Reflectance

     

    -

    -

    -26

    dB

     

    Receiver Power (damage)

     

    -

    -

    3

    dBm

     

    Notes: 
    1. The optical power is launched into 9/125µm SMF. 
    2. Measured with a PRBS 231-1 test pattern @25.78Gbps. 
    3. Measured with a PRBS 231-1 test pattern @25.78Gbps, ER=4dB, BER <10-6.

    Digital Diagnostic Memory Map (Compliant with SFF-8472)

    The transceivers provide serial ID memory contents and diagnostic information about the present operating conditions by the 2-wire serial interface (SCL, SDA). 

    The diagnostic information with internal calibration or external calibration all are implemented, including received power monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring.

    The digital diagnostic memory map specific data field defines as following (For further information, please refer to SFF-8472).
    p1880

    Mechanical Dimensions

    pp2so2

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