400G QSFP-DD SR8 Optical Transceiver Module

400G QSFP-DD SR8 100m

GIGALIGHT's 400G QSFP-DD SR8 optical transceiver module is designed for Data Center 400G Ethernet (8x50G PAM4) links reach up to 70m/100m over OM3/OM4 MMF.Get a Quote
Features
Applications
Datasheets
More
Part Number Product Description
GQD-MPO401-SR8C 400G QSFP-DD SR8, 850nm, 100m, MMF, MPO24 PC or MPO16 APC

400G QSFP-DD SR8 - GQD-MPO401-SR8C

  • Hot-pluggable QSFP-DD form factor and Compliant with CMIS
  • 8 channels full-duplex transceiver module
  • Transmission data rate up to 424Gbps (8x50G PAM4)
  • 8 channels VCSEL array and PIN photo-detector array
  • Internal CDR circuits on both receiver and transmitter channels
  • Maximum link length of 70m/100m over OM3/OM4 MMF with FEC
  • Power consumption < 10W
  • MPO24 PC or MPO16 APC connector receptacle
  • Built-in digital diagnostic functions
  • Operating case temperature 0°C to 70°C
  • 3.3V power supply voltage
  • RoHS compliant (lead free)

Description

The GIGALIGHT 400G QSFP-DD SR8 is an eight-channel, pluggable, parallel, fiber-optic QSFP Double Density for 2x200-Gigabit Ethernet applications. This transceiver is a high performance module for short-range multi-lane data communication and interconnection applications. It integrates eight data lanes in each direction with 8x26.5625GBd. Each lane can operate at 53.125Gbps up to 70 meters using OM3 fiber or 100 meters using OM4 fiber with FEC. This module is designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 76 contact edge type connector. The optical interface uses an MTP24/MPO24 PC connector or MPO16/MTP16 APC connector. The Common Management Interface Specification (CMIS) for QSFP-DD modules, This module incorporates Gigalight Technologies proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service.

Module Block Diagram

400G QSFP-DD SR8 Module Block Diagram

Figure1. Module Block Diagram

The 400G QSFP-DD SR8 is a kind of parallel transceiver. VCSEL and PIN array package is key technique, through I2C system can contact with module.

Absolute Maximum Ratings

Parameter Symbol Min Max Unit
Supply Voltage Vcc -0.3 3.6 V
Input Voltage Vin -0.3 Vcc+0.3 V
Storage Temperature Tst -20 85 ºC
Case Operating Temperature Top 0 70 ºC
Humidity (non-condensing) Rh 5 95 %

Recommended Operating Conditions

Parameter Symbol Min Typical Max Unit
Supply Voltage Vcc 3.13 3.3 3.47 V
Operating Case temperature Tca 0 70 ºC
Data Rate Per Lane fd 26.5625 GBd
Humidity Rh 5 85 %
Power Dissipation Pm 10 W

Electrical Specifications

Parameter Symbol Min Typical Max Unit
Differential input impedance Zin 90 100 110 ohm
Differential output impedance Zout 90 100 110 ohm
Differential input voltage amplitude ΔVin 900 mVp-p
Differential output voltage amplitude ΔVout 900 mVp-p
Skew Sw 300 ps
Bit Error Rate BER 2.4E-4 -
Near-end Eye Width at 10^-6 probability(EW6) 0.265 UI
Near-end Eye Height at 10^-6 probability(EH6) 70 mV
Far-end Eye Width at 10^-6 probability(EW6) 0.20 UI
Far-end Eye Height at 10^-6 probability(EH6) 30 mV
Near-end Eye Linearity 0.85 -

Notes:

  • BER=2.4E-4; PRBS31Q@26.5625GBd. Pre-FEC
  • Differential input voltage amplitude is measured between TxnP and TxnN.
  • Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics

Parameter Symbol Min Typical Max Unit Notes
Transmitter
Center Wavelength λc 840 850 860 nm -
RMS spectral width ∆λ - - 0.6 nm -
Average launch power, each lane Pout -6.5 - 4 dBm -
Optical Modulation Amplitude (OMAouter), each lane OMA -4.5 3 dBm -
Transmitter and dispersion eye closure(TDEC), each lane TDEC 4.5 dB
Extinction Ratio ER 3 - - dB -
Average launch power of OFF transmitter, each lane -30 dB -
Receiver
Center Wavelength λc 840 850 860 nm -
Receiver Sensitivity in OMAout RXsen (-6.5,-3.4) dBm 1
Stressed Sensitivity in OMAout -3 dBm 1
Maximum Average power, each lane 4 dBm -
Minimum Average power, each lane -7.9 dBm
Reflectance -12 dB -
LOS Assert -10 dBm -
LOS De-Assert – OMA -7.5 dBm -
LOS Hysteresis 0.5 dB -

Electrical Pin-out Details

400G QSFP-DD SR8 Electrical Pin-out Details Top side viewed from top

400G QSFP-DD SR8 Electrical Pin-out Details Bottom side viewed from bottom

Figure2. Electrical Pin-out Details

Power Supply Filtering

The host board should use the power supply filtering shown in Figure3.

400G QSFP-DD SR8 Host Board Power Supply Filtering

Figure3. Host Board Power Supply Filtering

Optical Interface Lanes and Assignment

The optical interface port is a male MPO24(MTP24) PC connector for GQD-MPO401-SR8CB and a male MPO16(MTP16) APC connector for GQD-MPO401-SR8CC.

400G QSFP-DD SR8 MPO24 Optical Receptacle and Channel Orientation

400G QSFP-DD SR8 MPO16 Optical Receptacle and Channel Orientation

Figure 4. Optical Receptacle and Channel Orientation

Diagnostic Monitoring Interface

Digital diagnostics monitoring function is available on all Gigalight QSFP-DD products. A 2-wire serial interfaceprovides user to contact with module.

QSFP-DD Memory Map

Figure5. QSFP-DD Memory Map

Mechanical Dimensions

400G QSFP-DD SR8 Mechanical Specifications

Figure6. Mechanical Specifications

  • 400G SR8 Ethernet (8x50G PAM4)
  •                         
  •       

    400G QSFP-DD PSM8 2km (Roadmap)

     
  •       

    400G QSFP-DD 2x FR4 2km (Roadmap)

     
  •       

    400G QSFP-DD LR8 10km (Roadmap)

     
  •       

    400G QSFP-DD DR4 500m (Roadmap)

     
  •       

    400G QSFP-DD FR4 2km (Roadmap)

     
  • Get a Quote

    Name*
    Email*
    Company*
    Phone
    Product*