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SFP28 25G LR

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Product Details
  • Product Features
    Data rate up to 24.33Gbps and 25.78 Gbps with CDR Engaged mode
    Data rate up to 9.95Gbps and 10.31Gbps with CDR Bypassed mode
    1310nm DFB laser
    Maximum link length of 10km using single mode fiber
    Electrically hot-pluggable
    Digital diagnostic monitoring
    Compliant with SFP+ MSA with LC connector
    Case operating temperature range: -40°C to 85°C
    Single 3.3V power supply with power dissipation < 1.2W
  • Applications
    CPRI Option 10
    25GbE
    10GbE optical links
  • Standards
    SFP+ MSA SFF-8431
    SFF-8472
    RoHS Compliant
  • Order information

    Part   Number

    Laser

    Distance

    Interface

    Temp

    DDMI

    Note

    ASP025I01310010

    1310nm DFB

    10km

    LC

    I-temp

    Yes


     

  • Performance Specifications

    Absolute Maximum Rating

    Parameter

    Symbol

    Min.

    Typ.

    Max.

    Unit

    Note

    Storage   Temperature

    Ts

    -40

    -

    100

    ºC


    Relative   Humidity

    RH

    5

    -

    95

    %


    Power   Supply Voltage

    VCC

    -0.5

    -

    4

    V


    Signal   Input Voltage


    Vcc-0.3

    -

    Vcc+0.3

    V


    Recommended Operating Conditions

    Parameter

    Symbol

    Min.

    Typ.

    Max.

    Unit

    Note

    Case Operating Temperature

    Tcase

    -40

    -

    85

    ºC

    Industrial

    Power Supply Voltage

    VCC

    3.135

    3.3

    3.465

    V


    Power Supply Current

    ICC

    -


    454

    mA


    Data Rate

    BR



    25.78

    Gbps


    Optical Characteristics


    Parameter

    Symbol

    Min

    Typ

    Max

    Unit

    Transmitter






    Average Launched Power

    POUT

    -1


    4

    dBm

    Center Wavelength

    λc

    1295

    1310

    1325

    nm

    SMSR


    30



    dB

    Optical Extinction Ratio

    ER

    3



    dB

    Spectral Width (-20dB)

    s



    1

    nm

    Transmitter and Dispersion   Penalty

    TDP



    2.7

    dB

    Output Eye Mask

    Compliant with IEEE   802.3ae


    Receiver






    Wavelength Range

    λ

    1295


    1325

    nm

    Receiver Sensitivity@9.953 Gb/s

    RSENS



    -12

    dBm

    Receiver Overload(OMA)

    Pmax




    dBm

    Receiver   Reflectance

    Rrx

    2



    dBm

    LOS De -Assert

    LOSD



    -15

    dBm

    LOS Assert

    LOSA

    -30



    dBm


    Notes:

    1.        Launched power (avg.) is power coupled into a single mode fiber with master connector.

    2.        lc refer to the selected wavelength as listed in the wavelength selection table.


    3.        Measured at 1528~1600nm,ER>8.2dBm, PRBS 231-1 and BER better than or equal to 10E-12; Measured with 80km transport

    4.        Measured at 1528~1600nm,ER>8.2dBm, PRBS 231-1 and BER better than or equal to 10E-12; Measured with 80km transport.


    Electrical Characteristics

    Parameter

    Symbol

    Min

    Typ

    Max

    Unit

    Transmitter






    CML   Inputs

    Vin

    200


    900

    mVpp

    Input   impedance

    Zin


    100


    ohms

    Transmit   Disable Voltage


    2


    Vcc+ 0.3

    V

    Receiver






    CML Output

    Vout

    300


    1000

    mV

    LOS output high   level

    VLOS-H

    2.0


    Vcc+0.3

    V

    LOS output low   level

    VLOS-L

    -0.3


    0.8

    V

    Notes:

    1.          Measured with receive Pin=Psen, Vcc=3.3V, operation temperature range without air flow.

                  2.          Connected directly to TX data input pins. AC coupled thereafter.

                  3.          Or open circuit.

                  4.          Into 100 ohms differential termination.

                  5.          These are unfiltered 20-80% values

                  6.          Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

    7.          Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the recommended power supply filtering network.


    Pin Assignment

    image.png

    Figure 1 Pin out of connector block on host board.

    Pin

    Symbol

    Name/Description

    NOTE

    1

    V

    EET

    Transmitter Ground (Common   with Receiver Ground)

    1

    2

    T

    FAULT

    Transmitter Fault.

    2

    3

    T

    DIS

    Transmitter Disable. Laser   output disabled on high or open.

    3

    4

    SDA

    2-wire Serial Interface   Data Line

    4

    5

    SCL

    2-wire Serial Interface   Clock Line

    4

    6

    MOD_ABS

    Module Absent. Grounded   within the module

    4

    7

    RS0

    Rate Select 0

    5

    8

    LOS

    Loss of Signal indication.   Logic 0 indicates normal operation.

    6

    9

    RS1

    No connection required

    1

    10

    V

    EER

    Receiver Ground (Common   with Transmitter Ground)

    1

    11

    V

    EER

    Receiver Ground (Common   with Transmitter Ground)

    1

    12

    RD-

    Receiver Inverted DATA   out. AC Coupled


    13

    RD+

    Receiver Non-inverted DATA   out. AC Coupled


    14

    V

    EER

    Receiver Ground (Common   with Transmitter Ground)

    1

    15

    V

    CCR

    Receiver Power Supply


    16

    V

    CCT

    Transmitter Power Supply


    17

    V

    EET

    Transmitter Ground (Common   with Receiver Ground)

    1

    18

    TD+

    Transmitter Non-Inverted   DATA in. AC Coupled.


    19

    TD-

    Transmitter Inverted DATA   in. AC Coupled.


    20

    V

    EET

    Transmitter Ground (Common   with Receiver Ground)

    1

    Notes:

    1.         Circuit ground is internally isolated from chassis ground.

    2.         TFAULT is an open collector/drain output, which should be pulled up with a 4.7kΩ– 10 kΩ resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V.A high output indicates            a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.

    3.         Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

    4.         Should be pulled up with 4.7kΩ- 10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls linelow to indicate module is plugged in.

    5.         LOS is open collector output. It should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.


  • Mechanical Specification

    image.png

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