QSFP28 LR4 Optical Transceiver 10km 100Gbps

QSFP28 LR4 Optical Transceiver 10km 100Gbps

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QSFP28 LR4 Optical Transceiver 10km 100Gbps
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    Description

      The QSFP28 LR4 Optical Transceiver integrates the transmit and receive path onto one module. On the transmit side, four lanes of serial data streams are recovered, retimed and passed on to four laser drivers, which control four electric absorption modulated lasers (EMLs) with 1296, 1300, 1305, and 1309 nm center wavelengths. The optical signals are then multiplexed into a single-mode fiber through an industry-standard LC connector. On the receive side, four lanes of optical data streams are optically demultiplexed by an integrated optical demultiplexer. Each data steam is recovered by a PIN photodetector and transimpedance amplifier, retimed, and passed on to an output driver. This module features a hot-pluggable electrical interface, low power consumption, and 2-wire serial interface.

    Product Features

    • Duplex LC receptacle optical interface
    • Single +3.3V power supply
    • Hot-pluggableQSFP28 MSA form factor
    • 4x25G Electrical Serial Interface
    • Compliant with 4x28G(CEI-28G-VSR)
    • AC coupling of CML signals
    • Transmitter: cooled 4x25Gb/s LAN WDM EML TOSA (1295.56, 1300.05, 1304.58, 1309.14nm)
    • Receiver: 4x25Gb/s PIN ROSA
    • Low power dissipation(Max:6W)
    • Built in digital diagnostic function
    • Operating case temperature range:0℃to 70℃
    • Compliant with 100GBASE-LR4
    • I2C Communication Interface

    Standards

    • Compliant with IEEE 802.3ba
    • Compliant with QSFP28MSA hardware specifications
    • Compliant with RoHS

    Functional Diagram

    QSFP28 LR4 Optical Transceiver diagram

    QSFP28 LR4 Optical Transceiver diagram

    Specification

    Absolute Maximum Ratings

    Parameter Symbol Min. Max. Unit Note
    Supply Voltage Vcc -0.5 3.6 V
    Storage Temperature TS -40 85 °C
    Relative Humidity RH 0 85 %
    Rx Damage Threshold,per Lane PRdmg 5.5 dBm

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

    Recommended Operating Conditions

    Parameter Symbol Min. Typ Max. Unit Note
    Data Rate DR 103.1 Gb/s
    Supply Voltage Vcc 3.14 3.3 3.47 V
    Supply Current Icc 1.8 A
    Operating Case Temp. Tc 0 70 °C

    QSFP28 LR4 Optical Transceiver Electrical Characteristics (Top=0~70, Vcc=3.14~3.47V)

    (Tested under recommended operating conditions,unless otherwise noted)

    Parameter Symbol Min Typ Max Unit Notes
    Transmitter
    Signaling rate per lane DRPL 25.78125 ± 100 ppm Gb/s
    Differential input return loss (min) RLd(f) 9.5 – 0.37f,  0.01≤f<8 4.75 – 7.4log10(f/14), 8 ≤f<19 dB
    Differential to common mode input

    return loss (min)

    RLdc(f) 22-20(f/25.78), 0.01≤f<12.89 15-6(f/25.78), 12.89≤f<19 dB
    Differential termination mismatch Tm 10 %
    Eye width Ew 0.46 UI
    Applied pk-pk sinusoidal jitter Ppj Per IEEE 802.3bm
    Eye height Eh 95 mV
    DC common mode voltage DCv -350 2850 mV
    Receiver
    Signaling rate per lane DRPL 25.78125 ± 100 ppm Gb/s
    Differential data output swing Vout,pp 400 800 mV
    Eye width Ew 0.57 UI
    Vertical eye closure 5.5 dB
    Differential output return loss (min) RLd(f) 9.5 – 0.37f,  0.01≤f<8 4.75 – 7.4log10(f/14),  8 ≤f<19 dB
    Common to differential mode conver- sion return loss (min) RLdc(f) 22-20(f/25.78), 0.01≤f<12.89 15-6(f/25.78), 12.89≤f<19 dB
    Differential termination mismatch Tm 10 %
    Transition time, 20% to 80% Tr,Tf 12 ps

    Notes:

    1.20%~80%

    Optical Characteristics (Top=0~70, Vcc=3.14~3.47V)

    (Tested under recommended operating conditions,unless otherwise noted)

    Parameter Symbol Unit Min Typ Max Notes
    Transmitter
    Signaling rate, each lane Gb/s 25.78125 ±100 ppm 1
    Four Lane Wavelength Range λ1 nm 1294.53 1295.56 1296.59
    λ2 1299.02 1300.05 1301.09
    λ3 1303.54 1304.58 1305.63
    λ4 1308.09 1309.14 1310.19
    Total launch power Pout dBm 10.5
    Average launch power, each lane Pavg dBm -4.5 4.5 2,7
    Optical modulation amplitude, each lane (OMA) OMA dBm -1.3 4.5
    Extinction ratio ER dB 4
    Side-mode suppression ratio SMSR dB 30
    Average launch power of OFF

    transmitter, per lane

    POFF dBm -30
    Optical return loss tolerance dB 20
    Transmitter reflectance dB –12
    Transmitter eye mask {X1, X2, X3, Y1, Y2, Y3} {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} 3
    Receiver
    Receive Rate for Each Lane Gb/s 25.78125 ±100 ppm 4
    Four Lane Wavelength Range λ1 nm 1294.53 1295.56 1296.59
    λ2 1299.02 1300.05 1301.09
    λ3 1303.54 1304.58 1305.63
    λ4 1308.09 1309.14 1310.19
    Overload Input Optical Power Pmax dBm 5.5
    Average Receive Power for Each

    Lane

    Pin dBm -10.6 4.5 5,7
    Receiver Sensitivity(OMA)per lane Psens1 dBm -10.6
    Stressed Sensitivity(OMA) per lane Psens2 dBm -6.8 6
    Return Loss RL dB -26
    Receiver Electrical 3dB upper cutoff frequency, per lane GHz 31
    Los De-Assert Pd dBm -11.6
    Los Assert Pa dBm -23.6
    Loss Hysteresis Pd-Pa dBm 2

    Notes:

    1. Transmitter consists of 4 lasers operating at 25.78Gb/s each.
    2. Minimum value is informative.
    3. Hit ratio 5×10-5.
    4. Receiver consists of 4 photodetectors operating at 25.78Gb/s each.
    5. Minimum value is informative, equals min TxOMA with infinite ER and max channel insertion loss.
    6. SRS is measured with vertical eye closure penalty of 1.8 dB max, J2 of 0.30 UI, and J9 of 0.47 UI.
    7. Power value and power accuracy are with all channels on.
    Application
    • 100GBASE-LR4
    • Infiniband QDR and DDR interconnects
    • 100G Datacom connections

    Recommended Power Supply Filter

    QSFP28 LR4 Optical Transceiver 10km 100Gbps recommend circuit

    QSFP28 LR4 Optical Transceiver 10km 100Gbps recommend circuit

    Package Dimensions

    QSFP28 LR4 Optical Transceiver size

    QSFP28 LR4 Optical Transceiver size

    Order information
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