Product Brief


The MxL9368x is a highly integrated PAM4 DSP SoC that enables 800Gbps optical interconnects using 100Gbps over a single optical wavelength (100G/λ).

The device has a high-speed electrical interface with eight transmit (Tx) and receive (Rx) input/output (I/O) that connect electrically through a module connector to the host ASIC. The device also has a high-speed optical side interface that has eight Tx and Rx I/O connecting through the optical components to optical fibers.

The electrical interface supports 106.25Gbps PAM4 signaling per lane over C2M host channels. The optical interface supports 106.25Gbps PAM4 signaling per wavelength for DR, FR, and LR applications.

The device supports DSP functions including Line-side Tx digital pre-distortion (DPD), transmit pre-emphasis (TX FIR), receiver feed forward equalization (FFE) and decision feedback equalization (DFE).

The MxL9368x, in a 12mm × 12mm package, includes integrated TOSA drivers with differential and single ended options for both SiPh and EML implementations. It offers exceptional signal integrity for 112G signals in a compact footprint suitable for next generation optical module form-factors such as QSFP-DD800 and OSFP.


  • 800G capacity that enables 800G PSM8, DR8, 2xFR4, 2xLR4 and 400G DR4, FR4, LR4
  • Tx equalization includes pre-emphasis, digital pre-distortion, and reflection cancellation
  • Rx equalization includes CTLE, multi-tap FFE and DFE, and reflection cancellation
  • Integrated crystal oscillator eliminates the need for a costly reference clock source
  • Small package size to enable the QSFP-DD space requirements
  • BER monitoring
  • SNR/Histogram reporting for each receiver on both electrical and optical interfaces
  • Diagnostic loop-back, test pattern generation and error checking
  • SPI and I2C slave interface to communicate to module MCU
  • SPI master for flash memory interface
  • I2C master interface for TIA direct control
  • Embedded CPU for real-time control
  • Squelch function when Loss-of-Signal (LOS) or Loss-of-Lock (LOL) is detected


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    • QSFP-DD800 optical modules
    • QSFP-DD optical modules
    • OSFP optical modules

    Design Tools


    Parts & Purchasing

    Part Number Min Temp Max Temp Status
    MxL93683-AP-T -5 85 PRE

    Part Status Legend
    Active - the part is released for sale, standard product.
    EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
    CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
    PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
    OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
    NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

    Quality & Environmental Data

    Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

    Additional Quality Documentation may be available, please Contact Support.