Bem-vindo ao Homenet Electronic Technology Co.,LTD

Produtos

Contate-Nos

Você está aqui:Casa >> Produtos >> SFP Transceiver

SFP Transceiver

1.25G 850nm 550m

Product Features

●850nm VCSEL laser and PIN photodetector

● Up to2.125Gbps data rate operation 

●Compliant with SFP MSA and SFF-8472 with duplex LC receptacle

● Digital Diagnostic Monitor Interface

●500m transmission with 50/125µm MMF

●300m transmission with 62.5/125µm MMF

● Very low EMI and excellent ESD protection  

● +3.3V single power supply  

● RoHS compliant

●Case operating temperature

              Commercial: 0°C to +70°C

    

    Description

    The SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and 550m transmission distance with MMF.

     

    The transceiver consists of three sections: a VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.

     

    The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA. Functional Diagram

     

     

     

     

     

     

    Ordering information

    Data Rate

    (Mbps)

    Media

    Wavelength

    (nm)

    Transmission

    Distance(km)

    Temperature Range

    Tcase)(

    1250

    Multi mode fiber

    850

    <2

    0~70

    commercial

    1250

    Multi mode fiber

    850

    <2

    -10~80

    extended

    1250

    Multi mode fiber

    850

    <2

    -45~85

    industrial

     

    Absolute Maximum Ratings

    Parameter

    Symbol

    Min.

    Max

    Unit

    Notes

    Supply Voltage

    Vcc

    -0.5

    3.60

    V

     

    Storage Temperature

     

    -40

    85

     

    Relative Humidity

     

    5

    85

    %

     

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

    General Operating Characteristics

    Parameter

    Symbol

    Min.

    Typ.

    Max.

    Unit

    Notes

    Data Rate

    Gigabit Ethernet

     

     

    1.25

     

    Gb/s

     

    Fiber Channel

     

     

    1.0625

     

    Supply Voltage

    Vcc

    3.1

    3.3

    3.5

    V

     

    Supply Current

    Icc

     

     

    220

    mA

     

    Operating Case Temperature

    Tc

    0

     

    70

     

    -10

     

    80

    -45

     

    85

     

    Electrical Input/Output Characteristics

     Transmitter

    Parameter

    Symbol

    Min.

    Typ.

    Max.

    Unit

    Notes

    Diff. Input Voltage Swing

     

    300

     

    1600

    mVpp

    1

    Tx Disable Input

    H

    VIH

    2.0

     

    Vcc+0.3

    V

     

    L

    VIL

    0

     

    0.8

    Tx Fault Output

    H

    VOH

    2.0

     

    Vcc+0.3

    V

    2

    L

    VOL

    0

     

    0.5

    Input Diff. Impedance

    Zin

     

    100

     

    Ω

     

     

    Receiver

    Parameter

    Symbol

    Min.

    Typ.

    Max.

    Unit

    Notes

    Diff. Output Voltage Swing

     

    400

     

    1o00

    mVpp

    3

    Rx LOS Output

    H

    VOH

    2.0

     

    Vcc+0.3

    V

    2

    L

    VOL

    0

     

    0.8

    Note 1) TD+/- are internally AC coupled with 100Ω differential termination inside the module.

    Note 2) Tx Fault and Rx LOS are open collector outputs, which should be pulled up with 4.7k to 10kΩ resistors on the host board. Pull up voltage between 2.0V and Vcc+0.3V.

    Note 3) RD+/- outputs are internally AC coupled, and should be terminated with 100Ω (differential) at the user SERDES.

     

    Optical Characteristics

    ● Transmitter

    Parameter

    Symbol

    Min.

    Type

    Max.

    Unit

    Notes

    Ave. Output Power (Enable)

    Po

    -11

     

    1

    dBm

    1

    Total Jitter

    1.25G

     

     

    0.431

    UI

     

    Extinction Ratio

    ER

    9

     

     

    dB

    1

    Rise/Fall Time (20%-80%)

    Tr-Tf

     

     

    0.26

    ns

    2

    Wavelength Range

     

    840

    850

    860

    nm

     

    Spectral Width (RMS)

     

     

     

    0.65

    nm

     

    Output Optical Eye

    Compliant with  IEEE802.3 z (class 1 laser safety)

    ● Receiver

    Parameter

    Symbol

    Min.

    Type

    Max.

    Unit

    Notes

    Operating Wavelength

     

    770

     

    860

    nm

     

    Sensitivity

    Pimin

     

     

    -18

    dBm

    3

    Min. Overload

    Pimax

    0

     

     

    dBm

    3

    Total Jitter

    1.25G

     

     

    0.749

    UI

     

    LOS Assert

    Pa

    -35

     

     

    dBm

     

    LOS De-assert

    Pd

     

     

    -19

    dBm

     

    LOS Hysteresis

    Pd-Pa

    0.5

     

    6

    dB

     

    Note 1) Measured at 1250 Mb/s with PRBS 27 – 1 NRZ test pattern.

    Note 2) Unfiltered, measured with a PRBS 27-1 test pattern @1.25Gbps

    Note 3) Measured at 1250 Mb/s with PRBS 27 – 1 NRZ test pattern for BER < 1x10-12

     

    Pin Definitions and Functions

     

     

     

     

     

     

     

     

     

    PIN #

    Name

    Function

    Notes

    1

    VeeT

    Tx ground

     

    2

    Tx Fault

    Tx fault indication, Open Collector Output, active “H”

    Note 1

    3

    Tx Disable

    LVTTL Input, internal pull-up, Tx disabled on “H”

    Note 2

    4

    MOD-DEF2

    2 wire serial interface data input/output (SDA)

    Note 3

    5

    MOD-DEF1

    2 wire serial interface clock input (SCL)

    Note 3

    6

    MOD-DEF0

    Model present indication

    Note 3

    7

    Rate select

    No connection

     

    8

    LOS

    Rx loss of signal, Open Collector Output, active “H”

    Note 4

    9

    VeeR

    Rx ground

     

    10

    VeeR

    Rx ground

     

    11

    VeeR

    Rx ground

     

    12

    RD-

    Inverse received data out

    Note 5

    13

    RD+

    Received data out

    Note 5

    14

    VeeR

    Rx ground

     

    15

    VccR

    Rx power supply

     

    16

    VccT

    Tx power supply

     

    17

    VeeT

    Tx ground

     

    18

    TD+

    Transmit data in

    Note 6

    19

    TD-

    Inverse transmit data in

    Note 6

    20

    VeeT

    Tx ground

     

     

    Note 1) When high, this output indicates a laser fault of some kind. Low indicates normal operation. And should be pulled up with a 4.7 – 10KΩ resistor on the host board.

    Note 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 – 10KΩ resistor. Its states are:

      Low (0 – 0.8V): Transmitter on               (>0.8, < 2.0V): Undefined

      High (2.0V~Vcc+0.3V): Transmitter Disabled   Open: Transmitter Disabled

     

    Note 3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩ resistor on the host board. The pull-up voltage shall be between 2.0V~Vcc+0.3V.

           Mod-Def 0 has been grounded by the module to indicate that the module is present

           Mod-Def 1 is the clock line of two wire serial interface for serial ID

           Mod-Def 2 is the data line of two wire serial interface for serial ID

     

    Note 4) When high, this output indicates loss of signal (LOS). Low indicates normal operation.

     

    Note 5) RD+/-: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board.

     

    Note 6) TD+/-: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board.

     

    Diagnostics

    Diagnostics Specification

    Parameter

    Range

    Unit

    Accuracy

    Calibration

    Temperature

    0 to +70  -40 to +85

     

     

     

    °C

    ±3°C

    Internal/ External

    Voltage

    3.0 to 3.6

     

    V

    ±3%

    Internal/ External

    Bias Current

     

    2 to 15

    mA

    ±10%

    Internal/ External

    TX Power

    -13 to 1

    dBm

    ±3dB

    Internal/ External

    RX Power

    -21 to 0

    dBm

    ±3dB

    Internal/ External

    Typical Interface Circuit

     

     

     

     

     

     

     

    Package Dimensions

     

     

    Ordering Information & Related Products

    Dual Fiber SFP, 1.25Gbps, 850nm, 550M, without DDM

     Dual Fiber SFP, 1.25Gbps, 850nm, 550M, with DDM

    Por favor, envie suas informações básicas, entraremos em contato o mais breve possível!

    *

    *

    *

    *

Produtos relacionados