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100M 1310nm SFP 20km
Accelight’s single-mode transceiver is small form factor pluggable module for duplex optical data communications such as Fast Ethernet and OC-3/STM-1 SDH/SONET. It is with the SFP 20-pin connector to allow hot plug capability. This module is designed for single-mode fiber and operates at a nominal wavelength of 1310nm. The transmitter section uses a multiple quantum well 1310nm laser and is a class 1 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. The transceiver is designed to be compliant with SFF-8472 Multi-source Agreement (MSA).

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Product Details
  • Product Features
    Operating Data Rate up to 155Mbps
    20km with 9/125 µm SMF
    Single 3.3V Power Supply and TTL Logic Interface
    Hot-Pluggable SFP Footprint Duplex LC Connector Interface
    Operating Case Temperature
    Standard: 0℃~+70℃
    Industrial:-40℃~+85℃
    Compliant with MSA SFP Specification
    Digital Diagnostic Monitor Interface Compatible with SFF-8472
    Safety Certification: TUV/UL
    RoHS Compliant
  • Applications
    Fast Ethernet
    OC-3 IR-1 / STM-1 (S-1.1)
    ATM Switches and Routers
    Other Optical Links
  • Ordering information

    Part No.

    Data Rate

    Fiber

    Distance

    Interface

    Temp.

    DDMI

    ASFS0101310020

    155Mbps

    SMF

    20km

    LC

    -40~+85

    Yes


  • Performance Specifications

    Absolute Maximum Ratings

    Parameter

    Symbol

    Min.

    Max.

    Unit

    Storage Temperature

    Ts

    -40

    85

    °C

    Supply Voltage

    Vcc

    -0.5

    3.6

    V

    Relative   Humidity

    RH

    5

    95

    %

    Recommended Operating Conditions

    Parameter

    Symbol

    Min.

    Typical

    Max.

    Unit

    Operating   Case Temperature

    Tc

    -40


    85

    °C

    Power   Supply Voltage

    Vcc

    3.15

    3.3

    3.45

    V

    Power   Supply Current

    PD



    3.5

    W

    Date Rate



    100

    155

    Mbps

    Performance Specifications - Electrical

    Parameter

    Symbol

    Min.

    Typ.

    Max

    Unit

    Notes

    Transmitter

    LVPECL   Inputs(Differential)

    Vin

    400


    2000

    mVpp

    AC   coupled inputs*(Note6)

    Input   Impedance (Differential)

    Zin

    90

    100

    110

    ohms

    Rin   > 100 kohms @ DC

    TX_Dis

    Disable


    2


    Vcc

    V


    Enable


    0


    0.8


    TX_FAULT

    Fault


    2


    Vcc

    +0.3

    V


    Normal


    0


    0.5


    Receiver

    LVPECL   Outputs (Differential)

    Vout

    400


    2000

    mVpp

    AC   coupled outputs

    Output   Impedance (Differential)

    Zout

    90

    100

    110

    ohms


    RX_LOS

    LOS


    2


    Vcc+

    0.3

    V


    Normal


    0


    0.8

    V


    Optical and Electrical Characteristics

    (1310nm FP and PIN, 20km)

    Parameter

    Symbol

    Min.

    Typ.

    Max

    Unit

    9µm Core   Diameter SMF

    L


    20


    km

    Data Rate



    100/155


    Mbps

    Transmitter

    Center   Wavelength

    λC

    1260

    1310

    1360

    nm

    Spectral   Width (RMS)

    Δλ



    4

    nm

    Average Output Power

    Pout

    -15


    -8

    dBm

    Extinction   Ratio

    ER

    8.2



    dB

    Rise/Fall   Time(20%80%)

    tr/tf



    2

    ns







    TX_Disable   Assert Time

    t_off



    10

    us

    Receiver

    Center   Wavelength

    λC

    1260


    1600

    nm

    Receiver   Sensitivity

    Pmin



    -28

    dBm

    Receiver   Overload

    Pmax

    -3



    dBm

    LOS De-Assert

    LOSD



    -29

    dBm

    LOS Assert

    LOSA

    -45



    dBm

    LOS Hysteresis


    0.5



    dB

    Functional Description of Transceiver

    image.png

      SFP Transceiver Electrical Pad Layout

    image.png

    image.png

    Pin Arrangement and Definition

    Pin

    Symbol

    Name/Description

    Plug Seq.

    Note

    1

    VeeT

    Transmitter Ground

    1

    5)

    2

    TX Fault

    Transmitter Fault Indication

    3

    1)

    3

    TX Disable

    Transmitter Disable

    3

    2) Module   disables on high or open

    4

    MOD-DEF2

    Module Definition 2

    3

    3) 2 wire serial ID interface.

    5

    MOD-DEF1

    Module Definition 1

    3

    3) 2   wire serial ID interface.

    6

    MOD-DEF0

    Module Definition 0

    3

    3) Grounded   within the module.

    7

    Rate Select

    Not Connect

    3

    Function not available

    8

    LOS

    Loss of Signal

    3

    4)

    9

    VeeR

    Receiver Ground

    1

    5)

    10

    VeeR

    Receiver Ground

    1

    5)

    11

    VeeR

    Receiver Ground

    1

    5)

    12

    RD-

    Inv. Received Data Out

    3

    6)

    13

    RD+

    Received Data Out

    3

    6)

    14

    VeeR

    Receiver Ground

    1

    5)

    15

    VccR

    Receiver Power

    2

    7) 3.3 ± 5%

    16

    VccT

    Transmitter Power

    2

    7) 3.3 ± 5%

    17

    VeeT

    Transmitter Ground

    1

    5)

    18

    TD+

    Transmit Data In

    3

    8)

    19

    TD-

    Inv. Transmit Data In

    3

    8)

    20

    VeeT

    Transmitter Ground

    1

    5)

    Note:

    1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ 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 KΩ 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) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10 KΩ resistor on the host board. The pull-up voltage shall be VccT or VccR .

    Mod-Def 0 is 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

    4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ 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 SFP module.

    6) 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. The voltage swing on these lines will be between 400 and 2000mV differential (200 –1000mV 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 SFP transceiver 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 100Ω 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 400 – 2000mV (200 – 1000mV single-ended).


  • Mechanical Specification

    image.png


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